Error when connecting to MDM Layout Server

Hi Experts,

Can any one help ? I keep getting this runtime error when starting MDM5.5 SP06 Publisher GUI on version 5.5.64.84 to connect local Layout Server:

Program: c:\Program_1\SAPMDM1.5\Layout~1\mdls.exe

R6025

- Pure virtual function call

I have also searched in google related for the above message and I got to know from MS MSDN lib:

Calling a pure virtual function is a programming error, so you need to find the call to the pure virtual function and rewrite the code so it is not called.

...........

But I still don't know where I can see the code in this circumstance ? Or any possibilities to fix it ?

Thanks very much for your help

Kind regards,

Wei Dona