Don't know if anyone else gets this problem or it's a prob with my system but any advice would help

I am trying to join 2 mpeg-2 file together using M2edit Pro...Every time I start the process it gets about 2 mins into it then shuts the proggy off. I did a "Dr M" on the files to check for errors and it comes back with the following right through the check:

* Incorrect GOP timecode. Expected 00:00:02:10 but got 00:00:02:15
* Incorrect GOP timecode. Expected 00:00:03:00 but got 00:00:03:02
* Incorrect GOP timecode. Expected 00:00:03:17 but got 00:00:03:22
* Incorrect GOP timecode. Expected 00:00:04:07 but got 00:00:04:10

I thought it might just be this SVCD however, it does it on all of my SVCD's not just that one!!!

Can anyone advise on this

Thanks