EventInstance becomes invalid, sound stops

Not sure what I am doing wrong, following the exact same code as event_parameter sample.
Using master bank stock and parameter Surface of event:/Character/Footsteps/Footsteps
At some point, the sound playback stops and the event instance becomes invalid.
Same code worked fine with previous version of fmod.

Log attached.

After investigation, the previous version didn’t work either.
The problem was that I use fmod inside Moai and the garbage collector randomly decided to cleanup my objects thus stopping the event instance.
Problem solved.

When you say the previous version of FMOD are you referring to 1.03.02? Are you calling system update regularly? Can you post the code where you update the event?