Fails to spawn command line process

Hi

I am new to zedebee, and I intend to use it to tunnel a Terminal Services 
session. I am using "start zebedee -f client.zbd" from the command prompt 
(detached mode), but I get only 'ERROR: failed to spawn 'c:\zebedee_MM.rdp'. 
(note: I used file monitor to see if there were any permission problems with 
that file, but there are none)

thanks in advance for any help. config file follows:

verbosity 2	# Slightly more than basic messages

detached true

server false	# No, it's NOT a server!
ipmode both

compression zlib:9	# Allow maximum zlib compression
keylength 256		# Allow keys up to 256 bits
keylifetime 36000	# Shared keys last 10 hours
maxbufsize 16383	# Allow maximum possible buffer size

logfile "C:\Program Files\Zebedee\zbdserver.log"
timestamplog true

keygenlevel 2	# Generate maximum strength private keys

listenmode false
#localsource false
#multiuse false
serverhost aaa.bbb.ccc.ddd
serverport 3389
#tunnel aaa.bbb.ccc.ddd:3389
command 'c:\zebedee_MM.rdp'




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