When I load ConsoleOne and double click on a user, I'm getting a message box "Entry Point Not Found"

'The Procedure entry point NMAS_ClientGetErrMsg could not be located in the dynamic link library nmas.dll'

I click OK and the same error message again, then I can get in ConsoleOne 1.3.6f - JDK1.4.2 JVM 1.4.2_05
Netware 6.5 OES SP6. Workstation W2K all patched to date.

Does someone know what is causing this?