I’m getting blank frames every once in awhile when I shoot with my STF8300. I seem to remember reading about this somewhere, can anyone fill me in on a fix?
It specifically happens when I focus.
Are you using a powered USB hub? I was getting these blank frames too
until I switched to a high quality powered USB hub. Not all hubs are
equal. I bought a Plugable.com USB3 7 port:
Legacy Products – Plugable Technologies
I tested this hub by taking 2000 bias frames and not a single one was
blank. I still think that it also has something to do with the SBIG
driver, but they tell me differently 
joel
Another thing to try when USB problems occur is to go into SBIG driver checker and check the box for asynch USB under “config driver”. Sometimes that helps.
I had this with my FLI camera. It would happen more often the shorter the
exposure is. I.e. every now and then when I’m focusing and almost always
when I took bias frames.
MarkSJoel,
I thought it was you! Thanks, I’ll do that!
CCDMan, I’ll do that too! Mark, I had that happen with my ST-10 and it was shutter. After a reboot it worked. I am going to replace the hub though… I think that could be an issue. After finally fixing my roof sensors (linear switches are amazing) and repairing my weather station (temp/humidity sensor died, thank god it’s user replaceable), I’m almost 100% again.