Check the Gameserver, there should be an error there, probably you changed the default DB names without change them on the stored procedures.
08/23/2012 20:58IceAmStiel#3
If those are the jSRO files you might encounter wrong operation types sent to the procedures, mostly _STRG_ADD_PACKAGEITEM which handles such purchases.
An error should be shown anyway at the GS :)
08/24/2012 18:29ILowe#4
zszc files dont have _STRG_ADD_PACKAGEITEM
and jsro files link have ?
08/24/2012 19:23IceAmStiel#5
Use an SQL profiler to check the incoming statements - will be easy to track the problem if it's db sided