Problem is very stange.
I've got MQX project with RTCS and it works fine (RTCS init and bind normally).
Then I add some code (in function compeletly not connected with RTCS, function executed after RTCS init and bind or even never executed!) and RTCS crashes on:
it waits indefinitely in this function. So I stop debugger and look into MQX toolkit:
On taks list:
TCP/IP MQX_UNHANDLED_INTERRUPT (0x0041)
What does it mean?