How to build stand-alone app from simulink model deployed on a raspberry-pi

Hey, I have a simulink model that runs an algorithm on the raspberry pi and sends the results back to a java program. For this I use the UTP-block delivered with the RPI-support package. It works fine when I start the model from Matlab, but I'm trying to create a Standalone... The Slbuild function doesn't work.. error: Invalid Simulink object handle When the model is deployed on the RPI, it creates an executable automaticly but when I start that, nothing happens,... Any suggestions how I can create an executable that is able to send UTP-packets from the RPI?