CMdaAudioOutputStream::Write does'nt work

[ehsanTC]

Hi all
I have a Qt thread that uses an instance of CMdaAudioOutputStream to play a piece of sound.
I need to invoke CMdaAudioOutputStream::Write() in the run() method of my class. But when I do it, the program logic stops at the CMdaAudioOutputStream::Write(aStream).
If I add an instance of CTrapCleanup class in the run() before invoking Write(), I get a E32USER-CBASE 65 panic.
Additionally, If I uses CMdaAudioOutputStream::Write() in the main thread of my program, it works great.

Whats the problem?

[wizard_hu_]

Read the documentation for E32USER-CBase 65 and review the usage of Cleanup Stack accordingly.