Troubleshooting

This page contains workarounds for known issues with MagiCAD’s latest releases.

Revit 2026.5 is incompatible with older versions of MagiCAD

Problem: After installing Revit 2026.5 update, MagiCAD versions prior to 2027 MR are incompatible and do not work. This is due to the .NET10 upgrade on Revit as Microsoft will end support for .NET 8 on November 2026.

Note! Revit updates cannot be reverted after installation.

Version: Older than MagiCAD for Revit 2027 MR

Workaround: Install older Revit version

Solution: Update to latest MagiCAD version 2027 MR

Dynamo stops working after MagiCAD 2027 installation

Problem: After installing MagiCAD 2027, Dynamo fails to load packages and Dynamo stop working. The issue is caused by a version conflict with RestSharp.dll distributed with MagiCAD Supports & Hangers.

Version: MagiCAD for Revit 2027 and 2027.1

Workaround:

Remove or rename the following file:

Solution: Will be fixed in 2027 UR1 version

Critical issue in the sprinkler calculation that may affect calculation results in certain situations

Problem: Issue occurs when the last sprinkler inside the sprinkler design area (sprinkler 12) is one of the weakest sprinkler and is connected with a tee or a tap using the same pipe size as the sprinkler (size 25), while there are additional sprinklers in the branch outside the design area and the option “ignore branches shorter than” is enabled. In these cases, the pipe connecting node 10 to sprinkler 12 may sometimes be ignored and excluded from the calculation, resulting in a lower pressure demand than the system actually requires.

Version: MagiCAD for Revit 2023 and newer

Workaround:

• Re-calculate the system, Issue can be identified in the calculation by checking the system has correct Leqv for all branches.
• Disable the “ignore branches shorter than” setting so that the connection pipe between the sprinkler and the fitting is included in the calculation.
• Use a different pipe size for the pipe leading to the tee that connects sprinkler 12 than the tee has.
• 

Solution: Fixed in MagiCAD for Revit 2027, Update 1

Fatal error when using copy branch

Problem: Using Copy Branch function in section view causes a fatal error.

Version: MagiCAD for Revit 2026 UR-1 and UR-2 in Revit 2026

Workaround: -

Solution: This is caused a problem in Revit, so the fix should be done by Autodesk

Luminaire import error from DIALux Evo 13.1

Problem: Luminaires exported from DIALux Evo 13.1 (Version: 5.13.1.0 | Released: 29/04/2025) in IFC format (2.3.0.1) contain fundamental property set changes and thus cannot be imported to MagiCAD for Revit as new families, nor mapped to any existing ones.

Version: MagiCAD for Revit 2025 UR-1, MagiCAD for Revit 2025 UR-2, MagiCAD for Revit 2026

Workaround: Use the DIALux Evo 13.0 version.

Change properties duct series not changing fittings properly

Problem: Updated fittings lose connection to duct series and modifications to network later on will cause issues as reducers will not be according to the new series.

Version: MagiCAD for Revit 2025 UR-2

Solution: Fixed to MagiCAD for Revit 2026 MR

Workaround: -

Symbol conversion with border arrows is broken

Problem: Symbol conversion with border arrows is broken. When creating new border arrow symbols with the function, created symbols are broken

Version: MagiCAD for Revit 2025 UR-1, MagiCAD for Revit 2025 UR-2

Solution: Fixed to MagiCAD for Revit 2026 MR

Workaround: By manually adding working border arrow symbol families into the Revit project, border arrow function can be used and the symbols work normally. You can download working border arrow symbols here FIN_Panel_Border_Arrows_R2023!

Fatal error: AccessViolationException when checking the dataset writing permission

Problem: The fatal error may occur when two users work in an internal dataset simultaneously in a workshared project.

Version: MagiCAD for Revit

Solution: Fixed to MagiCAD for Revit 2025 UR-2

Workaround: No known workarounds at the moment.

Problem in Calculate S&H -dialog in Revit 2025

Problem:  User definitions are not working properly to set or calculate the unit mass

Version: MagiCAD for Revit 2025 UR1, Revit 2025

Solution: Estimatad fix version is 2025 UR2

Workaround:

MagiCAD Support and Hangers module has been excluded from MagiCAD 2025 for Revit 2025 version

Problem: MagiCAD Support and Hangers module has been excluded from MagiCAD 2025 version due to incompatibility issues with Autodesk .net8 upgrade

Version: MagiCAD for Revit 2025 for Revit 2025. Note! S&H is included in the MagiCAD 2025 for Revit 2023.1 and Revit 2024. 

Solution: Works in 2025 UR1

Workaround: –

Electrical calculations have been excluded from MagiCAD 2025 for Revit 2025 version

Problem: Electrical calculations have been excluded from MagiCAD 2025 for Revit 2025 version due to incompatibility issues with Autodesk .net8 upgrade

Version: MagiCAD for Revit 2025 for Revit 2025. Note! Electrical calculation is included in the MagiCAD 2025 for Revit 2023.1 and Revit 2024. 

Solution: Works in 2025 UR1

Workaround: –

AutoCAD 2026.1.2 update causes problem in MagiCAD

Problem: After updating to latest AutoCAD 2026.1.2 version, which was released 6.8.2026, MagiCAD gives a fatal error when adding new products on Project-dialog.

Version:  MagiCAD for AutoCAD with AutoCAD 2026.1.2 update

Workaround: It is possible to add new products via Connect “Seach products”

Solution: Will be fixed in 2027 UR1 version

Legend and Report Templates are missing when opening projects in older versions

Problem: Legend and Report Templates created in MagiCAD 2027 may not be displayed when the project is opened with older MagiCAD versions. In some cases, updating existing legends may cause the legend contents to disappear.

Version:  MagiCAD for AutoCAD/BricsCAD 2027

Workaround: –

Solution: Will be fixed in 2027 UR1 version

The object cannot be updated: Please check the layer locking error message

Problem: When a duct/pipe networks contain a T-branch with a reduction, it is not possible to delete the branch duct. The following warning is displayed:

“The object cannot be updated. Please check for layer locking errors.”

Version: MagiCAD for CAD 2027

Solution: The issue is fixed in 2027 UR1 version

Workaround: As a workaround, delete the smaller main duct first so that the reduction is removed from the T-branch. After that, the branch duct can be deleted normally.

System change problem in Electrical

Problem: In 2026 UR-2 the Change Properties feature is unable to change systems of switchboards, cable trays, busbars, lighting tracks and LED-stripes.

Version: MagiCAD for CAD 2026 UR2

Solution: The issue is fixed in 2027

Workaround: –

Problems with graphics acceleration in AutoCAD 2027

Problem: When hardware acceleration with its “Fast shaded mode” is on in AutoCAD 2027, crashes may occur e.g. when hovering over MagiCAD objects. At the time of the MagiCAD 2027 release there is/was no fix in sight for the problem.

Version: MagiCAD for AutoCAD 2027 + MagiCAD 2027

Solution: Waiting for a fix in AutoCAD 2027

Workaround:This can be avoided by turning either the whole hardware acceleration or just its “Fast shaded mode” off from the Graphics Performance options of AutoCAD. Another workaround, which may work in some machines, is to set the GFXDX12 variable to 0 which will then make AutoCAD use the older directX 11 instead of the newer directX 12. This has helped before in older AutoCAD versions as well when facing similar symptoms.

Product change limitations in Electrical

Problem: Due to technical difficulties, changing the product sizes of busbars, lighting tracks, LED-stripes and cable trays via Change Properties is limited to the current drawing only. In addition, vertical T-branches, circuit units and supply units of busbar trunking systems cannot change their size. These must be redrawn when needed.

Version: MagiCAD for CAD 2027

Solution: Will be fixed to next version

Workaround: Changes only to current drawing

Heat loss calculations in MagiCAD Room

Problem: Errors have been identified in heat loss calculations in some projects using MagiCAD 2026 UR-2. For this reason, we recommend carefully reviewing heat loss calculation results when working with MagiCAD 2026 UR-2.

Issues have been observed in the generation of roof and floor structures. As a result, a space may incorrectly be assigned an external roof structure when it should be an intermediate structure, for example. This leads to incorrect heat loss calculation results.

The issues do not occur in every project, but as some cases have been reported, we would like to inform users and encourage them to carefully verify their calculation results.

Version: MagiCAD for CAD 2026 UR2

Solution: The roof and floor structure issues are fixed in the MagiCAD 2027 version.

Workaround: Update MagiCAD to version 2027 or use earlier version 2026 UR-1

Problems with Side View -function in BricsCAD V26

Problem: Using the end-side view causes incorrect coordinates to be applied, and the user must manually restore the current coordinates.

Version: BricsCAD V26 + MagiCAD 26 UR1

Solution: Waiting for a fix in BricsCAD V26

Workaround: Works in BricsCAD V25

Insulation visibility issues

Problem: In some cases, the insulation of duct fittings might not be visible. In addition, these faulty fittings will not get exported to IFC.

Version: MagiCAD for CAD UR1, Ventilation

Solution: We are investigating the issue and a fix will be released in the near future.

Workaround: Open the Project settings, do to Model drawings and change the LOD level to 350 and close the project. This fix the problem and you  can go and change it back to previous LOD level. Note: This must be don to all drawings before IFC export.

MagiCAD versions after BricsCAD V26.1.05

Problem:  BricsCAD V26.1.05 doesn´t install the required .NET libraries and it causes problems with MagiCAD.

Version: BricsCAD V26.1.05

Solution: Re-install MagiCAD because MagiCAD installation install the required .NET libraries.

Workaround: –

Problems with the new legend templates

Problem:  If you create legend templates in a project using 2025 UR2 or 2026 MR, and then reopen the project with 2025 UR2 or 2026 MR, all legend templates created within the project (except those created with earlier versions) will be erased

Version: MagiCAD for AutoCAD 2025 UR2, MagiCAD for AutoCAD 2026 MR, MagiCAD for BricsCAD 2025 UR2, MagiCAD for BricsCAD 2026 MR

Solution: This will be fixed in 2026 UR1

Workaround: –

Problem when installing windows -and doors in MagiCAD Room

Problem:  Instabilities have been discovered in the Room module of MagiCAD 2025 UR-2 when placing windows or doors. 

Version: MagiCAD for AutoCAD 2025 UR2, MagiCAD for BricsCAD 2025 UR2

Solution: This has been fixed and the new installation package is available in MagiCAD download portal. It is mandatory to uninstall the old MagiCAD 2025 UR-2 version first and then reinstall from the new packages.

An alternative method is to copy the needed files from the attached zip-packages (here for AutoCAD and here for BricsCAD) into the MagiCAD installation folder (as default C:\Program Files\MagiCAD or C:\Program Files\MagiCAD for BricsCAD).

Workaround: Re-Install MagiCAD with the new installation package

It is not possible to add radiator height to dimension text

Problem:  It is not possible to add radiator height information to dimension text

Version: MagiCAD for AutoCAD 2025 UR1, MagiCAD for BricsCAD 2025 UR1

Solution: This will be fixed in 2025 UR1, Service release

Workaround: MagiCAD 2025 MR version

Active storey is changed after performing the calculation

Problem:  Active storey is changed after performing the calculation if there are many drawings opened at the same time

Version: MagiCAD for BricsCAD 2025 UR1

Solution: This will be fixed in 2025 UR1, Service release

Workaround: MagiCAD for BricsCAD 2025 MR version

Hide settings will be reset to their default values

Problem:  Hide settings will be reset to their default values when autohide is enabled (Viewport Preferences) and drawing is saved

Version: MagiCAD for AutoCAD 2025 UR1, MagiCAD for BricsCAD 2025 UR1

Solution: This will be fixed in 2025 UR1, Service release

Workaround: MagiCAD 2025 MR version

Wrong friction loss method in sprinkler calculation

Problem:  If the calculation is done by using the network option, calculation uses the wrong friction loss method – it uses Hazen-Williams instead of Darcy-Weissbach. Calculation works correctly when using system option in the calculation.

Version: MagiCAD for AutoCAD 2025 UR1, MagiCAD for BricsCAD 2025 UR1

Solution: This will be fixed in 2025 UR1, Service release

Workaround: After the calculation is done with the system then network option no longer uses the wrong method. However when the Bricscad/Autocad is closed and new session is started then the calculation is using again wrong method until system calculation is done.

File locking problem with Autodesk Desktop Connector version 16

Problem:  Autodesk made changes to Desktop Connector 16 and those changes causes problem with MagiCAD project files. Files are not locked properly when a user is editing them

Version: MagiCAD for AutoCAD 2025 UR1, AutoCAD 2024 and 2025

Solution: Fixed in version 2025 UR2

Workaround: AutoCAD 2023 and Desktop Connector 15

A Version conflict with McHpv_r24x64.arx or Version conflict with McHpv_V24.brx error when starting the IFC Export

Problem: “Version conflict with McHpv_r24x64.arx” error appears in MagiCAD for AutoCAD and “Version conflict with McHpv_V24.brx” in MagiCAD for BricsCAD when launching IFC Export or during the IFC export. The error varies according to the used version.

Version: MagiCAD for AutoCAD/Bricscad 2024 UR-1 or newer

Solution: -

Workaround: Purge the model drawing list of dwg’s that are not found anymore in the file location.

Problems in thermal bridge calculation in MagiCAD Room

Problem: MagiCAD Room 2025 forgot the thermal bridge values after save-, calculate -and update text function. It also calculated the length of thermal bridges as many times as there were spaces above and all values were summed together.

Version: MagiCAD for AutoCAD 2025

Solution: Problems have been fixed to 2025.1 version. Download and install MagiCAD 2025.1

Workaround: –

Updating Support & Hangers in older project causes Revit to crash

Problem: If you update the S&H products when opening the project -or after the project is already opened, Revit crashes

Version: MagiCAD for Revit 2024 UR2

Solution: Install MagiCAD 2024 UR2.1

Workaround: –

Sizing causes problem in eccentric reducers

Problem: Offset Height and offset Width get the wrong values after sizing the network and it cause a wrong geometry for the reducers

Version: MagiCAD for Revit 2024 UR2

Solution: Install MagiCAD 2024 UR2.1

Workaround: –

It is not possible to install the DHWR domestic hot water circulation point when Revit’s “Enable analysis for closed loop hydronic piping network” setting is turned ON.

Problem: It is not possible to install the DHWR domestic hot water circulation point when Revit’s “Enable analysis for closed loop hydronic piping network” setting is turned ON.

Version: Revit 2023 and newer

Solution: –

Workaround: Turn OFF the “Enable analysis for closed loop hydronic piping network” setting in
Manage -> MEP Settings -> Mechanical Settings -> Pipe Settings -> Calculation -> Hydronic Networks

Changing any file path in MagiCAD User Settings does not work.

Problem: Changing any file path in MagiCAD User Settings does not work. The new paths are written under the wrong version in Registry Editor.

Version: MagiCAD for BricsCAD 2024 UR-1

Solution: Will be fixed in MagiCAD for BricsCAD 2024 UR-2

Workaround: Remove the existing MagiSettings_BRX.dll in

C:\Program Files\MagiCAD for BricsCAD and request a new one from support@magicad.com or support@magicad.se and add it in the same location. For this you will need admin rights.

For MagiCAD Electrical for BricsCAD you can still change the file paths in User Preferences.

It is not possible to change the active workset in pipe/duct/cable tray dialogs.

Problem: It is not possible to change the active workset in pipe/duct/cable tray dialogs.

Version: MagiCAD for Revit 2024 UR-1

Solution: Will be fixed in MagiCAD 2024 UR-2

Workaround: While the drawing command is active, worksets are selectable through the Revit dialog.

Creating a new system using the MagiCAD device installation dialog can generate an error.

Problem: Creating a new system using the MagiCAD device installation dialog can generate an unexpected error. This happens when there is an object in the project with Revit element ID 0.

Version: MagiCAD for Revit 2024 UR-1

Solution: Will be fixed in MagiCAD 2024 UR-2

Workaround: It is possible to create and manage systems with native Revit tools. If a system exists, then it is possible to assign devices to that system with the MagiCAD device installation dialog.

When creating a domestic hot water return or underfloor heating systems, the MagiCAD_Circulation_Point and MagiCAD_Floor_Heating_Point families need to be uploaded and installed in the project and systems assigned to them using Revit.

You will find the families in the Design folder in C:\ProgramData\MagiCAD-RS\2024_r20xx\Design

In some cases it is possible to delete the object with Element ID 0.

Calculating Sprinkler network causes error in MagiCAD for BricsCAD

Problem: Calculating Sprinkler network with the Network option causes a fatal error in BricsCAD

Version: MagiCAD for BricsCAD 2024 UR1

Solution: Will be fixed in MagiCAD 2024 UR2 version

Workaround: Go to BricsCAD settings and search Multi-Threading Flags setting. Uncheck the option Parallelized loading of drawings

Installing 3rd party family causes Revit error in Revit 2024.1

Problem: Installing 3rd party family from dataset to project causes Revit error in Revit 2024.1

Version: Revit 2024.1

Solution: Install Revit 2024.1.1 hotfix

Workaround: Install Revit 2024.1.1 hotfix