Line 6 say 'very soon' they will release the fix for ios8, that seems rather vague for a product that is based heavily on using an iPad or iPhone, i was planning on using my fx100 for this weekends gigs but as i can't access the my tones editor i couldn't adjust levels to be gig ready, very annoying, i hope its released in the next few days, even if they gave us a rough time frame instead of 'very soon'... like you i had no issues before the update and have nothing but praise for the whole thing but this wait is frustrating to say the least
Shane