I just received my pi 2 and put the .8 beta image on a new Micro SD card. It booted to PiPlay and I chose to install Mame from the menu. After downloading the file it throws a error:
mkdir: cannot create directory '/home/pi/pimame/emulators/mame4all-pi/': File exists cp: cannot stat 'mame4all-pi/mame4all_pi.zip': No such file or directory unzip: cannot find or open mame4all_pi.zip Updating PiPlay Database All Finished!
I did startx and went into Raspbian. The Zip file is downloaded in home/pi/pimame and I can open it and extract the files. Unfortunately something is amiss with the mame4all-pi directory. I can not put any files in there manually. It keeps throwing a permissions error. I've tried deleting the folder and re-running the Python install, but that results in the exact same error above.