I posted this last night on Hoffman's site and thought I'd share it here too. I've since tried to burn copies of all of the DVD's in the set but so far the only one that would copy was the debut.
https://forums.stevehoffman.tv/threads/my-doors-perception-dvds-have-disc-rot.923993/#post-23058266
https://forums.stevehoffman.tv/threads/my-doors-perception-dvds-have-disc-rot.923993/#post-23058266
I recently pulled out my copy of The Doors Perception boxset and was surprised when the videos on The Strange Days DVD wouldn't play. The first video on the disc started to play but then stopped mid song. I took the disc out and checked it and it looks like there's signs of disc rot on the outer edges of the disc. So I checked the other DVD's in the boxset and so far the only two that won't play the videos properly were Strange Days & Soft Parade although I saw signs of rot on a couple of the other discs where the videos still play. What was interesting was that I was able to listen the 5.1 section in DVD-Audio on both the Strange D. & Soft P. on my Oppo 103 completely through with no problem. I'm at least glad I can still enjoy the main album tracks and that's why I purchased them in the first place. So if you own this set check your DVD discs for rot. Bummer!