ESP:

The DOS version of Esp generates incorrect class tables and cannot be used to make applications because of that. The OmniGo SDK's glue detects the above bug and refuses to link the program because of it.
{Edward di Geronimo Jr.}

Nathan Fiedler's comment:
Please send code that does not compile and I will test it. I find it very hard to believe that ESP doesn't work correctly. It is more likely your code is incorrect in some way.