Sorry I can't figure this one out.  I am using WideFS etc to send keysends for my EFIS commands such as range etc.  It has been working fine in conjunction with my ISA Epic card and FS2004.   
I recently switched to the Epic USB card and put in the appropriate files ie) Epicinfo.dll etc, and moved my WideServer files over.  However, now the keysends aren't working - although I can push the appropriate key on the client computer and get the range to change on my EFIS so the Instruments are working just WideFS isn't communicating??  ( I have the most recent version of FSUIPC and WideFS also).  It is driving me crazy.  Why isn't it sending/receiving the keysends?  Wha :x t have I forgotten? 
Thks,  Bruce