Try before with the latest version (4.7.9f) as prior versions had bugs. You'll find it in other posts. I'll deliver a new mpi file soon.
As I can see, your xml file ate on a network share. Are you shure that windows have recconnected it before ? After each restart of your MP computer, Windows doesn't reconnect drives shared. I don't find how to force that reconnection...
To test if it's the case, open the Windows File Explorer and browse your shared drive. After verify if you see or not your movies into MP. If it works, you can use as I do for my needings. I assign my Network share to a local drive and I create a .bat file with following commands :
net use Z: /DELETE
net use Z: \\PC-sever\Ant_Data
Where Z is the drive letter choosen.
and I put that bat file in the Windows Start folder to be executed at each Windows restart.