Fusion 7.5 won't render simple flow.

Hello,
Just started with Fusion in my classroom. I intended to introduce my students to Fusion with a super simple flow of a loader (LD) and a saver (SV) to convert an image sequence to a movie. The simple flow works fine on my instructor machine but all of my student machines would not render. No errors, no warnings. "Render" button just does nothing. AFAIK, the machines are identical, although, I'm sure there are differences in the software installed, i.e., I confirmed the student machines do not have quicktime where my machine does. I did install quicktime on one of the student machines and it made no difference though... so I have no idea what the problem could be.
Machines are Win8 x64, Alienware I7s with dual GTS450 graphics boards (non-SLI).
Is there a logfile I can look at to diagnose the problem? Has anyone else experienced similar behavior?
I'm really excited about using Fusion since all of my students will have home access (versus AfterFX). I just need to figure out how to get it working!!
Thanks!
j.
Just started with Fusion in my classroom. I intended to introduce my students to Fusion with a super simple flow of a loader (LD) and a saver (SV) to convert an image sequence to a movie. The simple flow works fine on my instructor machine but all of my student machines would not render. No errors, no warnings. "Render" button just does nothing. AFAIK, the machines are identical, although, I'm sure there are differences in the software installed, i.e., I confirmed the student machines do not have quicktime where my machine does. I did install quicktime on one of the student machines and it made no difference though... so I have no idea what the problem could be.
Machines are Win8 x64, Alienware I7s with dual GTS450 graphics boards (non-SLI).
Is there a logfile I can look at to diagnose the problem? Has anyone else experienced similar behavior?
I'm really excited about using Fusion since all of my students will have home access (versus AfterFX). I just need to figure out how to get it working!!
Thanks!
j.