Running window 7 + cgminer 2.5.0 with 9 BFL singles, after approximation 20-30 minutes this happens: Error: Get temp returned empty string. First on one then another miner until cgminer becomes completely unresponsive and it won't close. It is is never consistent (as far as COM ports/BFL singles) and I've tried changing USB ports. If I try to relaunch cgminer I get "permission errors" for each COM port and I am forced to restart the machine to be able to mine again (for another 20 minutes). I am about to reformat the drive and install ubuntu. DOES ANYONE have an idea of what is going on. I know of someone else running the exact same setup and having absolutely no issue. I don't think its a problem with the singles themselves, I've tried running them on a different pc for extended periods of time..
I launch cgminer using the following batch command:
cgminer -c cgminer.conf -S \\.\COM4 -S \\.\COM5 -S \\.\COM7 -S \\.\COM8 -S \\.\COM9 -S \\.\COM10 -S \\.\COM3 -S \\.\COM6 -S \\.\COM12 -G
Thank you for any feedback.