I have a new iMac 27" 3.5 GHz Intel Core i7 with 32 GB 1600 MHz DDR3, running 10.8.5. I have a project using AVCHD files running at 59.94 fps, 1920x1080. The media is on a OWC Mercury Elite- AL Pro Qx2; it is at least 3 years old and it is connected to the iMac via a LaCie eSATA hub (with the eSATA cord). Also I have the Mercury Playback Engine GPR Acceleration (CUDA) enabled.
I can edit in a project for a while fine but then the playback starts getting weird and hanging up. The cursor jumps in the timeline and the picture freezes on a frame. Sometimes, the playback monitor screen turns a solid green. Sometimes I will then receive an error message saying "Sorry, a serious error has occurred that requires Adobe Premiere Pro to shut down. We will attempt to save your current project." I usually have to force quit at this point. I try opening a new project and bringing in the sequences again. It will work for some time, and then the same problem again.
Is there a problem with Premiere Pro or do I need a faster, newer media drive?
Thanks.