DB error

[havard20009]

Hi
i installed vb 3.6.8 after upgrade i try to remove ibProArcade form my vb,
after removed i received DB error ,i received my table is missing form my db.
i used last db backup for resolve this problem,
what can i do for remove ibProArcade from my vb without any db problem
plz help me
tanx about your help

db tables
games_champs
games_cats