Inactive Steady Flow Analysis

When analysis in HEC-RAS is run, a blank screen with "Inactive Steady Flow Analysis" appears and no analysis is completed.

I ran your model using my version of RMS and HEC-RAS. It appears to run fine.

Can you check your compile date of RMS (choose RMS and then ABOUT)? I am running a beta version dated June 4, 1997. Also, what version of ACAD are you using and what operating system do you have? I think that it is probably more of a memory problem, where HEC-RAS is not starting up properly on your computer (only partially) and so you see a failed startup screen.