Is that second template a new/empty one, or do you reference the old one, or do you try to create it from a file template? I'm on the same version and did quite a bit of corridor modelling before Christmas. I haven't seen it fail with an empty new one. I did have massive issues though with...
TBC VER.jpg
Downloaded latest release of TBC (TBC 2025 20 1 FULL SETUP) and installed it on 2 computers. After a reboot and "Check For Updates" TBC still shows me as running the previous version (2025 20). It doesn't register the update, Downloaded and installed it twice to check. So is the download link...
251227 TBC Crash Report.txt