Known issues - SYNCHRO 4D Pro 2022 (v6.5.1.5) release

Our team would like to be transparent about the known issues found in this release, while investigation is going on and fixes are being implemented. If you encountered similar issues, please provide all necessary details to us for investigation (synchrosupport@bentley.com) In the meantime, please try out the provided workaround to see if the issues still persist. 

Not enough memory error or crash on startup of SYNCHRO 4D Pro (November 16, 2022)

Edit as Assigned, 3D Path, 3D Subdivision and Growth Simulation of Appearance Profile may not work on specific geometry

Working on SYNCHRO Control project with 4D Pro is slow, but working on private project (.sp) is ok

1. Not enough memory error or crash on startup of SYNCHRO 4D Pro (November 16, 2022)
   1. 
   2. The most probable cause is that user installed MSVS 2015-2022 redistributable (version 14.34.31931) update by Microsoft. Microsoft has been contacted and their product team is now investigating the issue. It is also confirmed by Microsoft that SYNCHRO 4D Pro is not the only product impacted by this issue. Track this issue logged by Microsoft here: Legacy applications may crash with latest vc_redist 14.34.31931.0 - Visual Studio Feedback
   3. Impacted versions: 6.5.1.5 and potentially all versions. 
   4. Solution: Microsoft has finally released a production fix for this. https://learn.microsoft.com/en-us/cpp/windows/latest-supported-vc-redist?view=msvc-170
   5. Workaround: 
      1. If possible, do NOT install the MSVS 2015-2022 redistributable (version 14.34.31931) update until Microsoft provides a resolution to this issue. 
      2. If this issue is experienced, manually add msvcp140.dll to SYNCHRO 4D Pro installation directory: C:\Program Files\Bentley\SYNCHRO\4D Pro should help solve the issue. The dll can be requested by contacting synchrosupport@bentley.com. 
      3. To be safer, request a copy of dlls from synchrosupport@bentley.com and add them to SYNCHRO 4D Pro installation directory: C:\Program Files\Bentley\SYNCHRO\4D Pro.
         
         
2. On some geometry imported to 4D Pro from .spx through Revit plugin, the following issues may occur - 
   1. Edit as Assigned does not show the manipulator
   2. 3D Resources do not move along the assigned 3D Path
   3. 3D Subdivision has issues (such as it cannot detect subdivided parts)
   4. Growth Simulations for Appearance Profiles do not work 

      This issue only occurs on some geometry imported to SYNCHRO 4D Pro from .spx exported via the Revit plugin; it does not happen to all geometry exported from the Revit plugin.

      For the geometry or models that have the first three issues (a, b, & c), the workaround is to separate those models and geometry and then import into 4D Pro using another format such as dwfx , skp, or fbx instead of spx through the Revit plugin. Unfortunately, some rework is required after those geometry and models are imported into 4D Pro in a different format if previously Edit as Assigned, 3D Path, and 3D Subdivision were used. 

      For the Growth Simulation issue (d), you can try using a Custom type, with coordinates defining the direction of growth -
      

      For custom directions, you can also create a Cutting Plane, orient it to match the growth direction, and use those coordinates in Appearance Profiles - 
      

      If you have a copy of .sp file saved in 6.4, and all the above workaround does not work for you, please continue your work in 6.4 until a fix is available.

      The development has identified the root cause and has started working on a fix. We will make an announcement as soon as the fix is available to users.

3. Working on SYNCHRO Control project with 4D Pro is slow, but working on private project (.sp) is ok

Strange UI behavior with menu fading in slowly and overall slow performance while working on SYNCHRO Control project was reported by a few users. To solve this problem, go to Virus & threat protection settings, select Manage settings, and then under Exclusions, select Add or remove exclusions. List of processes/path to include in the anti-virus exclusion list:

Folder: %AppData%\synchrohub

Processes:

Synchro4DProCEF.exe
Synchro4DPro.exe
synchro-forms-renderer.exe
Bentley.Licensing.Service.exe

 If real time protection is enabled in Microsoft Windows Defender, MSMpEng.exe takes much CPU usage. MsMpEng.exe is an important part of Windows Security, formerly known as Windows Defender.

Temporarily disable the Real-time protection of Windows Defender and see if this impacts this issue. If disabling it eliminates the issue, follow the link for Windows Defender customization that may help.

https://support.microsoft.com/en-us/windows/add-an-exclusion-to-windows-security-811816c0-4dfd-af4a-47e4-c301afe13b26 

Learn how to report issues with full details for faster resolution. 

NOTE that the the suggested fixes and workarounds are not universal and may be suitable only for some particular cases.