I got the identical script error when opening my co file. QB freezes when I try to receive inventory and I have to crash with task manager. After several attempts, QB couldn't open the co. file at all (6123,0).  File Dr couldn't repair, Windows installer couldn.t repair. I've reinstalled Premier 2015, but the same problem. File Dr. now tells me hosting mode is off and QBDBMgrN is not running on my computer. Norton 360 is active, but is allowing all QB through the firewall. https://a166211981.cdn.optimizely.com/client_storage/a166211981.html is a blank page with a white background.