Sure--two questions. Is this 2010.2 or 2010.3. And is this Windows 7? If you were running 2006 on the first computer, I'll assume that one is an XP machine? If these are ALSO XP machines then, it maybe be a 2010.2 vs 2010.3 version issue. If it's Windows 7, it's likely due to Windows 7 needing v2012 to send and receive TTL signals (which I notice you are using in your input file). Sorry if that sounded probably sounded waaay confusing--please feel free to ask for elaboration!