Draftsight 2020 crash

Hello everyone,
Draftsight 2020 SP1 x64 had a crash and now it doesn't work (windows 11).
I tried uninstall but I got an "Error 1325:vcProjects is not a valid short file name".
So I tried to upgrade to 2025 version but I got the same error.
I have no chance to go ahead with my job.
Any suggestion?