iTunes cannot backup iPhone because a backup can’t be saved on this computer
Loopster found his own solution. He suggests this:
“1) Open the most recent .log file in …Application DataApple ComputerLogsMobileSync
2) The error is because iTunes backup is trying to copy from a non-existent directory (lazy programming Apple! 8-L ) Read the one of the first entries and you’ll see a directory location such as …Application DataApple ComputerMobileSyncBackup<40 letters and numbers> – copy the 40 letters and numbers and create a new directory exactly where the log is looking for it!
3) Now copy one of each of the most recent .MDdata and .MDinfo files from any backup directory and rename them using the 40 letters and numbers from 2) but make sure you keep the .MDdata and .MDinfo extensions.
4) Run a manual backup…”
If you need to learn more about logfiles try this resource that shows how to clear log files and their location. It should show you were most log files are.
This worked for me thank you
That would really help except I don't know WTF you're talking about. Not everyone is familiar with computer programming. Don't even know how to get to .logfile???
The article is updated with a link to the location of the logfiles and how to clear them. Included in that link is third party software that also clears log files.
I cannot find MDdata or MDinfo, any help?
It is possible that they might be invisible. If you are using Windows this Microsoft article explains how to show hidden files.
http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/win_fcab_show_file_extensions.mspx?mfr=true