Hi Jared. Just tried with version 16. unfortunately same issue. Link to log below thanks mate.
https://www.dropbox.com/s/cealbdkuicdw7i0/sg_logfile_20160624123439_version%2016.txt?dl=0
Just to give as much info as possible, I just used frame and focus with the looping button, not the take one, and it worked fine with no issues. Ticked the save to disk box and it saved the pics no problems. This was a bin 1x1 5sec exposures taken continually. I am not sure what the differences between looping f & f and a sequence is, but it seems like something in the way a sequence works may put us on the right track. Thanks again for your help Jared.