So just to be clear, in your questionnaire (.que) file, you are entering:
Code:
 
C:\*programpath*\ekick.exe
in the filename field for the Executable item. Then in the Parameters field, you have tried entering:
Code:
 
(cexperiment.ebs subject=123)
If so, please post or send me a copy of the que file and I'll be happy to take a look at it.