Originally posted by Detweiler:
There is a tape in existence, though I've only ever known one person list it, and he wouldn't trade or sell it. Snotters from the JD site/Sharing The Groove. From what I understand about that gig, it was only the synths that failed, and then part-way through the gig rather than at the beginning. They simply did a guitar-based set from halfway. Similar thing happened to them at Denver Red Rocks in 1987 - they ended up playing a guitar songs second half of set because the synths had packed up.
I asked Snotters about this and he said it turned out to be a dud, somebody had substituted an edited Washington (I presume '83) in an attempt to pass it off as the Chicago gig, which he didn't find out about until later. Unfortunately, he doesn't recall the identity of the miscreant who perpetrated this deception.
The version of Red Rocks I have sounds really poor, something about condenser mics and outdoor gigs not mixing?
Likely the source since another version I auditioned (on MP3) was equally as bad.