Board Thread:Questions and Answers/@comment-87.96.155.247-20160204184431

I unsitalled QaSpace add on and after that I deleted manually screens and screen shemas which created by this plugin. I tried to install it again but I got an error that "This add-on couldn't be loaded. It has one or more errors that prevent it from being enabled" I am woondering if this is related to what I done? if yes how can i fix it? 