corrupt plugin

[COGordonW]

I work in a print shop and needed to add cutting master 4 to my illustrator 2021. In an attempt to follow to the manufactures instructions I did something that now keeps Illustrator from opening. I tried to uninstall 2021 and reinstall but it still cant open. I found that there is still a 2021 however I cant delete it even though I am the adminstrator of this computer. Is there a way to do a clean uninstall of 2021 so I can atleast reinstall open the program?

[Test Screen Name]

What did you do? Originally, trying to follow instruction? You may have broken something that isn't reinstalled. 

[COGordonW]

I followed the instructions from CutMaster where it has you manually load their plugin into the plugins folder. However even their tech support has said they have had mixed results. They are working on a new version but it could be months. None of that is the issue though because I was able to just reinstall AI 2020 and then run the old plugin in just fine. However my mt AI20201 will not open any more and just gives the error I am attaching a screen shot of. What I need now is a way to cleanly uninstall AI 2021 so I can reinstall it. Every time I have tried there is 2021 folder that remains and causes the same problem to occur. I have tried to delete the folder manually but I am denied access even though I am the administrator. I know there used to be an adobe clean program but I dont know where to get it.

[Monika Gause]

https://helpx.adobe.com/creative-cloud/kb/cc-cleaner-tool-installation-problems.html