I have a try to use the version 2.5. Now there is no licening problem and it is possibel to use both versions for DotNet1.1 and 2 on the same computer.
But the Command Builder will be not work. The Buttons to get the fields, and create the insert, update or delete commands are not avaible, because they are not enabled. If there ist anything wrong, or do I have a problem?