Rhino 5.5 causes crash on import of any DWG or DXF formats
I’m not seeing that here so far…
I’m not able to repeat that.
Can you please post a file that causes Rhino to crash?
If the crash reporting system comes up, be sure to include your email address, click the option to send the file, and describe what steps you followed that resulted in the crash.
Consider restarting your Mac and see if you can repeat the crash too.