The Win 64-bit GB installer gave me a prompt saying there was an error during instalation and provided a log. The log begins with:
"2023-11-22 15:28:29> Program: Starting Squirrel Updater: --install . --checkInstall --source=PROPLUS --silent --exeName=Teams.exe
2023-11-22 15:28:29> RegistryService: TryGetRegKey: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\ClickToRun\Configuration\ProductReleaseIds exists. Data - ProPlus2019Retail"
and goes on and on about apps like Teams not being installed, when they are. Regardless of how strange this is, it's stranger to find that upon running the installer, it absolutely nuked my GB Studio folder. Everything I had is gone.