Crash on Win10

[eugenesvk]

Not compacting anything, just launching the app (tried latest https://github.com/Freaky/Compactor/releases/tag/v0.10.1)

App: compactor, Version: UNKNOWN, Build Date: 2020-12-22, Hash: 571a6b0
panic: [mysteriously lacks a string representation]
Hit Enter to print the rest of the debug info.

After enter

   0: <unknown>
   1: <unknown>
   2: <unknown>
   3: <unknown>
   4: <unknown>
   5: <unknown>
   6: <unknown>
   7: <unknown>
   8: <unknown>
   9: <unknown>
  10: <unknown>
  11: <unknown>
  12: <unknown>
  13: BaseThreadInitThunk
  14: RtlUserThreadStart

mysteries indeed :)

[eugenesvk]

checking revealed nothing (though I guess it shouldn't because it's not bsod/crash, but your app handling the error itself?)

Check Event Viewer, particularly Windows Logs → System. There may be informative error logging there depending on the nature of the problem.