Just installed EasyWorship 7 on a new computer; created and saved my second schedule for use this weekend. However, when I went to reopen it to make changes, i get the error pop-up "Invalid Zip local header signature" and the schedule fail to open. Help!

I keep gitting Locked of my new scheduals I have created. ( Invalid Zip local header signature) or ( Cannot ope n this file it is currrently lock by a nother user). Their are no other users.HELP