Comodo Backup interferes with AutoCAD

I installed Comodo yesterday afternoon on my computer and ran a backup. Later I got on AutoCAD 2012 to do some work and I noticed that it was locking up and I would have to “End Task” to close it. I had a project deadline and so this sent me into a panic. I realized that the commands that were locking up AutoCAD were any commands that involved pulling up the windows explorer tree to browse to a file. Commands like “open” or “save as”. After about an hour I decided to uninstall Comodo. That solved the problem. I didn’t notice any problem with Adobe Acrobat or Microsoft Office products, so I don’t know if this was unique to AutoCAD or not. I don’t know if there is a setting that can be adjusted, but unless there is a solution. No Comodo for me.