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Thermal simulation with Sinda in Patran

Hello,
 
I'm preforming some simulations in Sinda, and when I try to initiate the simulation this stay sucked and don't start. With tutorial works fine, but when I try to do in a simple electronic box doesn't work.
I only have 15 tokens and Patran uses 13. Is related with that? Like Nastran I can generate the SIN file and preform after?