Error using Alaska 2.0 + eXpress

[digitsoft]

Error using Alaska 2.0
When I compile with version 1.90 I have no problem but if I compile with version 2.0 the same application gives me this error

Does anyone have any idea why this error is occurring?

Thank you

[digitsoft]

the solution was
1) Compile eXpress
2) Rebuild the .RES file
3) Rebuild the .DLLs
4) Compile the entire System

Thank you.