When I try this:

D:\[your file path]\bfgminer-3.5.1-win32\bfgminer-3.5.1-win32\bfgminer.exe -o [your pool and port] -u [your username] -p [your password] -G -S bigpic:all --icarus-options 115200:1:1 --icarus-timing 3.0=100''

I get "All devices disabled, cannot mine!"  My Bitfury shows correctly as COM5.  Bit lost.  My Erupter is working fine.