More problems with EVAL-ADICUP360 board and CrossCore 2.8.x

I can built and run the blinky example (debug) just fine in CrossCore 2.8.3 or 2.8.0. When I build and run (debug) example ADC it hangs on the at the UART sprintf float to string conversion:

sprintf ( (char*)szTemp, "Voltage: %fV \r\n",fVoltage );

When I build and run the  same ADC example under Keil, it runs fine. No problem with UART and sprintf.

What is the problem with CrossCore? What doesn't it just run in debug mode like Keil software?