MSSQL Error "SQL-Error: failure at assingning of Error"

Hello,

I want to make a SELECT statement on a MS SQL Server, on Oracle it
works fine, but on MS SQL i got the Error: "Failure ate assigning of
error" (This message is in German "SQL - Fehler: Fehlerzuweisung
gescheitert"

Env:
  - DELPHI 7
   - dbExpress
     - TSQLConnection
       - TSQLQuery

Thx Chris