I'm having problems starting Flux-capacitor.

I have the correct java RunTim env: 

C:\>java -version

java version "1.6.0_20"
Java (TM) SE Runtime Environment (build 1.6.0_20-b02)
Java HotSpot(TM) Client VM (build 16.3-b01, mixed mode)
When I launch the wrapper script:
>flux-capacitor.bat -t capacitor

I get "cant find tool capacitor".
I can access the help files etc.
Can any one give me a hand on this?
I'm looking to process the Geuvadis data set BAM files from ArrayExpress - although I have sliced the files with samtools.