asda you may not remove some or all of your Addons by reinstalling.

It has been my experience that uninstalling FS it will leave added files in the folder. When you reinstall it will just replace those files that may have been corrupted,
no problem. Hopefully you have saved,separately,all the addon files so you can reinstall them if you need.

The other thing is to check back to the last addition to FS you made and uninstall it then see what the result is.

If you have a RESTORE system utilise that as well,it should register your last addon.

If you read the READ ME files with most downloads you will see the author states that what he offers runs on his system but may not run on yours.

Good luck