1. nobody wanted to install it, people complained why they have to install addon x to be able to use addon y...
but nevermind, it's gone..
that's why you're getting this error.
i had the "check version" feature, which fetched a list with all the available addons and the newest version numbers and compared it with your installed ragtek addons
but, back to point 1
because nobody wanted to use it, i've removed it from most of the addons, SOOOOOOOOOOOO i THINK you should be able to deinstall it!
BUT i would recommand to check the sourcecode to see if it's used anywhere..
run grep and check if you can find inside /home/sociall1/public_html/area51/library/Ragtek any usages of Ragtek_FW
if it's only used inside of /home/sociall1/public_html/area51/library/Ragtek/FW it's fine and you can remove it, if not pls say me the addon id so i can check if you don't use the newest version, or if i hadn't released it