Need help with Admin tool

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Ok this my first post on a forum ever , but having problems with admin tool.
when i start to load admin i get an
Exception Unknown column "npc_id" in "where clause"
The admin tool wasnt able to connect to table npc_types

I hit ok to proceed then get this error
tbSpawnGroup: Cannot perform this operation on a closed dataset.

Im using Drawdes db and everything works fine except for admin tool, wasnt sure if i messed up on grant command or what i did wrong.
would appreciate any help.