XF 1.1 Cannot Delete Add-Ons

Whenever I try to delete an add-on, it gives me this error: "The files necessary for uninstallation of this add-on could not be found. Please replace them".

I think the necessary files to uninstall it would be the files that go into the library folder. I have verified 3 times, that all the files are there, I also re-uploaded them 3 times. After that, it still says it.

I have this error on three of my add-ons.

Edit: I have resolved this, please lock.
I don't remember this bit, since it took place over a year ago. I can always assist you with your issue over skype though. Please add me on skype @ yoshi9101.