TSKILL Not working/Pskill Does

I'm trying to use a DOS batch file to kill an application that somettimes get stuck in memory.  I am logged on as Adminstrator on Windows Server 2003 machine.  PSKILL works beautifully, but I don't want to knock everyone else using the application to get kicked out, so I am attempting to use tskill. I think this worked in the past but it is not working now. This is the synax of what I'm using:

c:\windows\system32\tskill.exe "filemaker pro.exe" /ID:0

(and 0 is the correct session - I double checked).  I can't use Process ID because this always changes, etc. and way complicated - just want tskill to use Session ID.  Is there something wrong with my syntax?
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tklingmanAuthor Commented:
Figure it out. The "FileMaker Pro.exe" part should NOT include the .exe extension.   Should just be "FileMaker Pro"

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Windows Server 2003

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