Program crashes when loading project - Hangs on "rebuilding all screens"

What do you want to achieve?

Everything was working fine until the program suddenly crashed and closed while I was working. When I tried to open the program and reload my project, it hangs on rebuilding screens. The program is locked up at this point and nothing responds. Closing the program is the only option.

I’d like to recover this project as I’ve spent several hours working on it.

What have you tried so far?

Rebooting, begging, kind words, bad words…

Screenshot or video


  • **SquareLine Studio version: 1.4.1
  • **Operating system: Windows 11
  • **Target hardware: ESP32-S3

It might help to find the cause of the crash if you could send the log-file (Troubleshooting | SquareLine Studio) to But if that’s not an option already as you’ve ran it several times since, I think you could recover your project from the project’s autosave folder, simply by extracting the .spj file from the latest autosave zip-file and overwriting with it the .spj project-file which you can’t open. (It would make sense to create a backup of the original .spj file before overwriting it, and so a comparison could be made between the auto-saved and original version.)