My Error Message "Failed to read X samples"

Hi David, just sent you a mail, we know what has caused the issue and have supplied you with a link to a version where this is resolved, as it is not yet available on the appstore (3.0.5).

Error message:
Writing AAF file
Adding assets to AAF file
Adding essence for asset [327_0058] to AAF file
Adding essence data to AAF file for portion 0 of asset [327_0058]
Reading audio data from audio extractor : 42400 samples
Failed to read 42400 samples
Error Extracting audio data (read 76792 bytes of 84800 required) (Error number 1)

Suggestion: Does this movie contain an unsupported audio format ?

No AAF file has been generated
X2Pro Audio Convert LE 3.0.4The FCPXML (attach it to your forum post)

My data:
FCPX 10.2.2
OS 10.11.1

"Trim embedded audio" option selected: No (I am not using Pro version)
What duration you have the "Trim handles" set to in the preferences: 2 seconds by default (I am not using Pro version)