this is a great forum and I am hoping someone can help.

I have a raspberry pi B+ running retropie 2.3 . All seems to work as expected except now I have added a ish audio device, mame emulation has failed. If I take device out and reboot mame works again.

The error when a Rom crashes is relating to segmentation and mentions runcommamd.sh and also that volume control has failed to find mixer elements.

All other emulators work with sound from the usb being perfect. Mame crashes on every Rom.

Desperate to move my project long but am now stuck :( please help