[pedigree]

It was only the template edit, you dont need to reimport from 0.60 to 0.61

Although Im suprised to see that error. Ill have to add a check to test for suplicate posbfits like that.. It shouldnt ever happen

The uninstall drops those two columns from the database

    $db->query_write("ALTER TABLE " . TABLE_PREFIX . "usergroup DROP vbstopforumspamviewpermissions");
    $db->query_write("ALTER TABLE " . TABLE_PREFIX . "usergroup DROP vbstopforumspamsubmitpermissions");

You might have to run drop uninstall/reinstall and if that fails, drop them from phpMyAdmin.

Im going to look how that could possibly happen

Theyre going to be gone in v0.7 anyway.