You mean the bits that fell off on the way from Oz to Canada got stuck back on on the way back? Darn static cling! :D :D

Well, I have a hard enough time teaching my windows using Dad to attach it pictures to send me much less get him to do an md5 (although I have some other users I can try it out with I suppose).

I suppose I should even try it on another Mac user. I will send it to my brother today....

Just got a note back, my brother-in-law can open the file on his windows system. Must be my Dad's bad driving! I wiill get my brother-in-law to check it on my Dads system to verify....

that is a question of probability
 

The probability that a file get corrupt when you send it and get fixed on its way back is very VERY low... I personnally never saw this in my life. You can give it a try but I think it is useless.