Today, my Mac crashed with a kernel panic. After rebooting I tried to start iTunes but it just showed this error message:
iTunes application could not be opened. An unknown error occurred (13010).

I remembered that I was in the process of updating the iTunes Genius database when the kernel panic occurred. I was able to start iTunes again after deleting the iTunes Library Genius.itdb file. You’ll find the Genius database file in the direcory $HOME/Music/iTunes.

I have a Line 6 PODxt guitar rig sitting on my music rack for years. I’ve had some very limited success connecting it to GarageBand when Mac OS X 10.5 was first released. Sometimes it worked but most of the time it wouldn’t record a thing in GarageBand. As this got a bit frustrating I just continued to use the PODxt on its own which always works fine.

Today, I tried again with Mac OS X 10.5.5 and the latest Line 6 driver and it worked right away!

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