Need to completely uninstall 1Password 4 [resolved]

I had both 1Password 3 and 4 on my Mac. V4 was working fine. I decided to uninstall V3. I use an app called App Zapper. I think it clobbered some files V4 uses when it was getting rid of V3. I tried reinstalling V4. It launches but there is nothing in it, and there is a very long integer number in the upper left and also lower right of the 1Pass window. It seems to have my pass phrase cached somewhere and seemed to think it is still syncing with iCloud. I disabled sync (left data in iCloud) and then turned sync back on. But it couldn't sync. I tired to create a new vault, to see if that would work. I got a message "library routine called out of sequence". The trash has a bunch of folders App Zapper put there, but I wouldn't begin to know where to put them back (right click on a folder in the trash has no put back option). I am guessing there is some hidden file or folder lurking somewhere that needs to be removed before I can fully reinstall. Any ideas where to look?