Media Player - creates reboot after accessing snowleopard macbook...

Hi,

 

I connected to devices to the media player - a macbook (with snowleopard) and a imac (with leopard).

 

While it is no problem to surf through the files of the imac, I am getting a reboot of the ATV 2 when acessing the macbook and loading the device. No idea why.

 

Any hint highly welcome

Kind regards

Armin