Navisworks crashing on Send

Just had a crash too.
this is the revit error:

Date/Time: 2023-06-06 09:50:43 +03:00
Application: Roamer.exe
Error: Access violation - code c0000005 (first/second chance not available)
Crashed Module Name: mscorlib.dll
Exception Address: 0x00007ff99b726a05
Exception Code: c0000005
Exception Flags: 80
Exception Parameters: 0, 0
Managed Exception Type: System.NullReferenceException
Managed Exception Address: 0x000001fce2ad36f8

Could you confirm the Connector version, Navis version and what steps repeatedly cause this issue for you.

If you were able to share the .dmp file that can also help as that error report is the generic Navis “I have crashed” report.

Hey it’s 2.14.2.
Managed to send it after another try.
Do you know where the dmp files are stored?


When Navis crashes, you can choose to view details; the two files have:

  • a state of the application
  • a report of your setup.
    I’m not interested in what you have installed on your machine, but the NavisWorksErrorReport.dmp has the stack trace for the error.

It can usually be found at:

NavisWorksErrorReport.dmp (5.1 MB)

Not a lot to go on there, either. All it is reporting is it tried to access a Navisworks object that no longer existed. Navis is aggressive with its memory management - I will double down again on GC optimisations.

The next release (2.15) should make far fewer IO trips to the memory store, which could remove this annoyance.

In the meantime, let us know if this is anything approaching a regular event.