Just received a update from Apple for iTunes, which I proceeded to install. Unfortunately it failed to install claiming it couldn’t restart Apple Mobile.
The error was 'Error 7 (Code 193)'
Tried a reinstall with the same results.
One suggestion seen on the web was to check the .Net installation, which I proceeded to do (version 4.5.1) and also checked that al .Net patched were applied, which they were.
Regretfully this didn’t not resolve the problem or make any difference at all.
In the end resorted to uninstalling all Apple products, including Quicktime. iTunes. Apple update service, Apple mobile etc., before performing a fresh reboot.
Now this time I could install the update successfully and it all works as before, picking up all existing music etc.