There's nothing in the documentation, but you could always try the /D, /V, /1 and /2 options ("D" for debug, "V" for verbose output, and the trace options from the other IBM CMOD tools.)
Of course, if you're having an issue, a PMR would be the best way forward.
I'll also throw this out there -- if you're trying to get SSL working, I've seen bad SSL certs hang/crash early versions of the clients.
Let us know what you're seeing so we can help.
-JD.