Context Capture: "Could not prepare Task..."

I am using the 7-day trial version of context capture. I have completed an Aerotriangulation and New Reconstruction. The problem is when I go to "Submit new Production", the ContextCapture Engine says that it could not prepare task and could not run task. Then the Production jobs remain as pending forever and never start. There is nothing else in the job queue. Is this a problem with the trial version or could there be some other problem?