Well, it would just crash for no apparent reason, and then the effects I'd apply (like white balance) might not take effect until 10 seconds after I hit Play.

One of the things I really liked was the Temperature setting in white balance. A super easy way to adjust the kelvin temp of the footage in one easy slider.

By "crash" do you mean the firstlight player would stop playing and lock up. Because thats what it was doing when I tried it.

Yep, that was it.

Both report to support on how you did it and what type of source caused the failure. May already be solved, as I haven't seen a lockup in ages. We were very stable at NAB.