we had a ton of problems as well..
calibration issues with an hp z3100
transparency issues across the board..
general crash issues..
and tech did connect with us to delete temp files... reset preferences.. seemed to continue being issues... Transparencies were definetely the biggest issues.
That being said I really like the product. We went back to onyx, flexi was kind enough to refund us the month or two we were on it, and I was happy with their attempted level of support.. I told them to let me know when they work it out.
I found the color profiling much better (other than its incompatibility with the z3100) than onyx. The blocks for color limits were much easier to read.. sounds like a small thing but made a difference for us.
And on a hp latex like we have, it has a click box to start heating up the printer while you are laying out your prints. It did cause the hp to lock up a few times though.. lots of good potential... hopefully they reach it.