an error occurred

I have emailed you directly.

Error message:
An error occurred converting Final Cut XML to AAF

Writing AAF file
Adding assets to AAF file
Adding essence for asset [HUGOST549] to AAF file
Adding essence data to AAF file for portion 0 of asset [HUGOST549]
Reading audio data from audio extractor : 699050 samples
Failed to read 699050 samples


No AAF file has been generated.
X2Pro Audio Convert 3.0.2

FCPX 10.2.2
OSX 10.11
trim embedded audio on, 5 sec. duration, but the same thing happens when i turn trim embedded audio off.

I already tried to replace audio files in the edit, doesn't work, removed files named in the error message, but it just keeps coming up with new files between the [..]