Hello there.
As of the most recent WiiMC (1.3.2), certain Youtube videos seem to consistently throw DSI exceptions for me, regardless of whether I run it over SD or USB. This occurs with or without no_ios_reload, whether running from SD or USB, and while running fine on IOS 58.
One particular example that immediately throws an exception on load is this one, which you can find as the sixth or so result if you search for “doom ost”:
http://www.youtube.com/watch?v=4iIrg4DM078
I was just curious if this issue is limited to something on my end, or if it throws an exception for other people.