Mechanica/Motion-Problem running analysis

[dave]

while Running Analysis - Got following message -

Compilation failed.Additional information may be available from outside of Mechanica Motion by examining the engine's log file.
exit mechanica motion and than type "mmwatch"
and when I open the message log - the last 4 lines was as under

-Generating equation of motion
-compiling equation
-compiling environment
-Linking simulator program
-disconnecting from the mechanica motion engine.

The question is where to type "mmwatch" to get more information
How can we fix this problem.

Thanks