WT library no longer works properly on Vista. It should work fine on Win 7 32 bit.
Here is a solution that might help.
1- First make hidden files and folders visible.
Go to control Panel/folder options/View tab/check to show hidden files and folders.
2- Go to C:\ProgramData\Watchtower\WTLibrary
3- delete the two files, "ca-bundle.zip" and "cert.pem"
4- Open Watchtower Library, go to help/check for updates and try again.
I hope this helps
Kind regards
Chris