Here's a little trap for the unwary!
My app ran fine on the VA-HR in the sim, but crashed on the device with error symbol not found HTTP_RESPONSE_CONTENT_TYPE_TEXT_PLAIN.
It took me a while to spot that HTTP_RESPONSE_CONTENT_TYPE_TEXT_PLAIN is a 3.0.0 enhancement.
But, the code runs in theVA-HR Sim, even though the target SDK is 2.4.x