I've got the same issue on CS3. Do you have _underscores in your columns, too?
Or does this just occur when you have your tablenames with suffixes?
WA-team, will there be a fix soon?
I'ver just created a new database table "tblVereine" with 12 columns like "IDVer", "nameVer". Then I applied the WA_DataAssist Wizard (2.05) and get the same errors in the update, insert and delete page.
Please WA see, if you can fix this soon.