🔍 What’s causing it
You have an issue with the length of the file name.
The software has a limit to the number of characters in the path - 128(?) and these include the drive letter and all spaces.
So:
C:\AppliCad\Roof Wizard\User\Billy-Bob_The_Builder-May_2021-Model Unit 14 Big House 27 Hippopotamus Boulevard really big city
is a long name and will hit the limit.
🛠️ How to fix it
Open the model
Save it with a really short name like [123] or something
Try again
✅ How to prevent it
Use abbreviations whenever you can to prevent this from happening.
For example, shorten
Unit 2 - No 235 Steel Boulevard
to
U2-235 Steel Blvd