Francois
I don't see any issue even with the files you shared.

Nevertheless, Please try the following options:
1. Reset user settings by going to SpaceClaim options > Advanced > Reset All User Settings:

2. Clear contents of %temp% folder.
3. Rename the SpaceClaim folder located at %APPDATA% to SpaceClaim.old. Close all open SpaceClaim sessions and start a new session.
Please let me know if this helps.
Regards,
Gaurav