Confirmed from my end. I can reproduce the problem of Cydia crashing by searching anything remotely close to a name of a theme bought & installed off theme it. and the problem of Cydia crashing can be resolved by uninstalling the theme.
PS, thank you kickerman for giving a solution. Did the SSH and worked great
the problem is due to packages being named the same on both platforms - an email was sent to all themeit developers about this conflict and to correct it on their end..has nothing to do with the app itself. Hope this helps!