MobileSync/Backup folder missing

Hi there,

I have been searching and searching for an answer to this but it seems that even Mr tinternet doesn't know!

I have been trying to get around to the solution for a while now as I thought "My 3GS is going to crash at some point and I will loose everything" and sure enough that day was yesterday.

When attempting to sync my 3GS, all purchases transfer over just fine so no real damage occurs but I receive the error "iTunes could not back up the iPhone Mark's iPhone because the back up could not be saved on this computer" along with a big scary red exclamation mark symbol.

I then found where the back up folder should be - User/Documents/Library/ApplicationSupport/MobileSync/Backup. The problem with mine is that the journey stops at ApplicationSupport - there is no MobileSync folder...

I believe this happened after upgrading my MacBook Pro to Lion. All software Mac & iPhone is up to date.

I've tried manually creating the folder just by chance iTunes finds the folder but I guess there is no direct link, so no luck there.

If anyone out there knows of how to get around this, answers will be much appreciated.

Thanks, Mark.