FileBot

It seems the uninstallation portion may have gone bonkers. When I try to use the windows installer, I end up with the following message (error).

Uninstalling previous versions...
Downloading latest version...
Installing latest version...
msiexec error 1619
Install failed. Please download the .msi package manually.

I've checked the Filebot folder in Program Files and it is empty.

Probably some anti-virus program interfering with the NSIS installer running msiexec, so the auto-install failed:

Install failed. Please download the .msi package manually.

Go to Downloads -> Latest Version -> Get the msi package for your platform (i.e. use x64 for 64-bit and x86 for 32-bit Windows)
https://sourceforge.net/projects/filebot/files/filebot/

It should work if you just download and install the msi package yourself.

Thank you. That worked with no issue.