Unknown Error when exporting AAF?

Please attach your fcpxml

Hi,

Im trying to export an AAF file from FCPX using X2Pro app. I keep getting error messages and cant work out whats wrong!

Error as follows:

Writing AAF file
Adding assets to AAF file
Adding essence for asset [IMG_1655] to AAF file
Adding essence data to AAF file for portion 0 of asset [IMG_1655]
Adding audio data to AAF file
Adding Sample Data
Creating Essence Data Objects


Error code: 0x80000004


No AAF file has been generated.

Can anyone offer some help?

Thank you!