[Xerte] Xerte 3.0 on W7 64-bit: unable to find added library path

[Ton van der Gun]

I installed Flex SDK, SA Debug Flash Player and Xerte 3.0 and set 
settings.xml to the SDK dir. However any SWF build crashes complaining 
that the added library path cannot be opened:
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mxmlc -accessible=true -optimize=true -incremental=true -target-player 
10.1 -debug=false LearningObject.mxml 
-output=D:\@Driver\XML-content\Xerte3\Project\bin\LearningObject.swf 
-library-path+=C:\Progra~1\XerteP~1\Xerte3\lib 
-source-path=C:\Progra~1\XerteP~1\Xerte3

fcsh: Assigned 1 as the compile target id
Loading configuration file C:\FlexHero\frameworks\flex-config.xml
command line: Error: unable to open 'C:\Progra~1\XerteP~1\Xerte3\lib'(fcsh)
Use 'mxmlc -help' for information about using the command line.(fcsh)
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Maybe the two tildes (~) in the added library path should not be there? 
But how to avoid them? I run W7 64-bit and Xerte 3.0 installed as 32-bit 
app in C:\Program Files (x86)\XerteProject\Xerte3.

Thx in advance for an answer!

Ton van der Gun