fail to run bios psp audio example

Hi,

I try to run on target precompiled image from installed  package ....\biospsp_03_01_01\drivers\examples\evm6748\audio\bin\c6748-evm\evm6748_audio_sample_c6xdsp_debug.xe674

I get follow error:

EDMA driver initialization PASS.
ti.sysbios.knl.Semaphore: line 204: assertion failure: A_badContext: bad calling context. Must be called from a Task.
xdc.runtime.Error.raise: terminating execution

The same error appear when I build example sources with CCS V7 new created project.

it occurs during  createStreams(); call from Void Audio_echo_Task()

why interrupt handler contain semaphore pending call ? 

...\biospsp_03_01_01\platforms\edma_if\src\SwEdmaIf.c

/* Interrupt handlers */

static void SwEdma3_cc0_complHandler ()
{

SwEDMA3_semPend (semcc0, BIOS_WAIT_FOREVER);

}