DWRC does not start on Windows NT


after upgrading to Version 11 I can't start the "DameWare Mini Remote Control"-service on Windows NT systems. The message shown on the WinNT-system is

"The procedure entry point "ProcessIdToSessionId" could not be located in the dynamic link library KERNEL32.dll."

How to work around this problem?

I am running Windows NT V4.0 SP6