not working!

not working!

Hi,
 
I cant seem to get my outlook plugin working.  I installed it fine and used it for a day or two, it then seemed to be causing a few problems - crashing outlook, before finally giving me an error message that asked me if I wanted to disable the plugin, I said yes, thinking that I could re-enable it later, but I cant! If I go into the plug in manager the zoho plug in is not listed, and even if I uninstall and reinstall the plug in it doesn't show up!
 
Is there anything that I can do to reenable it without reinstalling outlook? (which I reall dont want to do!)
many thanks