[...]

In the end I used Terminal (Applications > Utilities), then select 'Shell' from the top menu, then 'New Command.' Then type 'dot_clean' and leave a space after dot_clean. Now here's the bit where it didn't work for me the first time, but then after reading James Likeness' post it did work. You MUST remove all spaces from the file that you wish to clean. For example, I was trying to clean the movie Super Troopers. If I dragged the Super Troopers file in as it was with a space in it, it wouldn't work. But sure enough after temporarily changing the file name to 'SuperTroopers,' it worked straight away.

So, once you've edited the file name to have no spaces and you've typed 'dot_clean' in the new command part of Terminal and left a space after 'dot_clean,' now drag and drop your file into the new command, then hit run. A new window should appear saying 'Process completed.' If so, the file should be able to be transferred now.

Note, you can't put the space back into the file name until after it has transferred.

Now it's a pain in the butt having to process the dot clean on multiple files, but the good news is that once you've cleaned a bunch of files, you can transfer all of them in one go.

I hope this helps some people as it was driving me nuts for a long time.

I've also submitted a bug report to Apple too, so hopefully for those who this doesn't help, Apple will fix it in 10.6.6 (but I wouldn't hold my breath).

Good luck guys!!

Change it on a windows machine and see what happens.