Context :
Windows 7 SP1
Eclipse Luna 4.4.0
VMWare Fusion Version 7.0.1 (2235595)
Some eclipse plug-ins (it could another piece of software) try to write a hidden configuration file in C:\Users\xxx.
After activating the mirroring of the Desktop, these configuration files are no more available and not writable.
The problem is that the \\vmware-host\Shared Folders is Read/only. Therefore writing files in this directory is not possible.