Airplay suddenly stopped working, in the sense that the Max2Play player no longer shows as an Airplay speaker on my iPhone.
I tried to disable the Shairtunes2 plugin from the Squeezebox Server Webadministration in order to re-enable it, but after I restarted the Squeezebox server, the plugin was gone. The only plugin available right now is Shairtunes2 (fork), but that does not seem to work either.
I also tried installing the bugfix for Shairtunes2, but it looks like it’s not installing properly, because the option to install it is still there. I tried to run the command line alternative, but I cannot install the remote control plugin properly either. After I install ShellinABox, then in the Remote Control interface, I only see the option to install it again.
Other than that, the Squeezebox server works fine.
Have you activated the SD card write protection? If not, it sounds a lot like your SD card is defective. Can you install any other plugins for testing purposes? Please share the debug info from the Settings/Reboot tab. Do you have the option of installing Max2Play on a different SD card?