My BFL Little Single has been mining nicely on my laptop using BFGminer, but I can't get it to run on my spare PC running Windows XP (bfgminer 32-bit).  The port picks up fine, but when I run BFGminer, I get the "No device... bla bla bla... cannot mine" message.  I have triple check port names and everything else.  I find that if I replug the USB port and run bfgminer, it will freeze the first time and report the message each time after.  Any suggestions?