Tested Mame cores again using latest nightly October 10 on my Shield Portable Kitkat.
I have two Mame cores (Arcade Mame 2003 and Arcade Mame 2014) and none of them work. There’s currently no Mame core available that works on my device. The error I get is that it asks me to “open archive as folder” or open in core, and regardless what I choose it then crashes “retro arch unexpectedly quit”.
Other cores such as fba work just fine.
This problem with Mame cores has been persistent for about 2 months in all nightlies.
It worked in the last release version so something went south during the nightly development of the Mame cores.
I updated info files and tried basically everything. I am not sure what else I can do to help fix this error.
I will not and should not have to upgrade to lollipop which is broken on the shield portable on so many levels (sound for example is distorted in lollipop)