Simulink real-time model execution stops at 1st iteration randomly

Hello,

I am using Simulink Real-time for running a vehicle model with actuator inputs given through an ADC(NI PCI-6229). The states are sent over serial. When I build this model and download it to an i386 target it randomly fails to start and gets hung up on the 1st iteration. I have done the following to try to resolve the issue since i have not found any error code for the same:

• Changed my MATLAB 2014a setup to a differnet PC.
• Changed the target PC
• Disconnected all connected hardware
• Changed the SCB-68 connection block
• cleaned all generated files and built the model again

The model runs when I bypass the Analog inputs with constants. The proves that there is some issue with the analog data acquisition block, but i may be horribly wrong. Has anybody come across this issue in the MATLAB 2014a pack?

Swaroop