OSX Partition won't mount. Permissions seem wrong
Ok, I managed to fix but I did have to pay some money.

I ran Disk Warrior from my TechTool Pro drive and it was fixed.
Below is the information that it returned.

• 1 file had a duplicate ID that was repaired.!
!
• 17 files had a directory entry with an incorrect text encoding value that was repaired.!
!
• 1 folder had a custom icon that was found to be damaged.!
!
• 2 folders had a directory entry with an incorrect custom icon flag that was repaired.!
!
• 3 folders had a directory entry with an incorrect text encoding value that was repaired.!   !
• Incorrect values in the Volume Information were repaired.!
!
• Critical values in the Volume Information were incorrect and were repaired.!