Indeed ! That's strange!
I've been trying to figure it out and let you know how to do it but the miner crashes!
Are you using the Bminer?
Yeah, using bminer.
I can't get it to launch at all by using their batch file; need to manually launch bminer.exe complete with all the command-line parms inside a cmd prompt window.
Super weird.
And even more super weird when I "echo mycmdline > filename.bat" and then go to launch filename.bat, it shit's itself and doesn't launch properly.
Windows is fucking retarded.
EDIT: Again, this is specific in dealing with difficulties using bminer.exe and grinmint.