he clip starting at 149.32 seconds in the project has an end point within its referenced asset

I have emailed you directly

Thank you! Do you have an older version, so, i can send files to sound department? I will have to create aaf tomorrow on my other mac for another project and i'm afraid to fail, because air starts soon. I will be able to test export in 5-6 hours.
If you need, i can try to export this file on my another mac later.

Thank you. I have downloaded and removed the fcpxml attachment from your post.

I'll let you know what I find, or whether I need more information

Please delete xml from post after downloading
The version of FCP X 10.2.2
OS X 10.10.5
Trim embedded audio option selected
duration of "Trim handles" set to 3

I got rid of first error excluding assets. So, i have only 2nd error

Please attach your fcpxml

and now
Writing AAF file
Adding tracks to AAF file
Writing AAF track structure
Processing clip
Adding clip from source channel 1 to track 5
The clip starting at 444.32 seconds in the project has an end point within its referenced asset [00126.3] of 9320 edit units but the asset only has a length of 9160 edit units

No AAF file has been generated.
X2Pro Audio Convert LE (Pro upgrade) 3.0.2

Hi! haven't seen this before:

Writing AAF file
Adding tracks to AAF file
Writing AAF track structure
Processing clip
Adding clip from source channel 1 to track 5
The clip starting at 149.32 seconds in the project has an end point within its referenced asset [intro-v2.1] of 17840 edit units but the asset only has a length of 14971 edit units

No AAF file has been generated.
X2Pro Audio Convert LE (Pro upgrade) 3.0.2

I'm using X2ProLE (pro upgrade) version 3.0.2
I'm using FCP X 10.2.2