Steve Ogden commented
same problem, except mine with an image lounge resource. project opened earlier today, no image lounge effects have been added. can't reimport it. etc. I had this problem before in the last year. just updated to lastest AE, tried again. no luck. can't open any of my recent autosaves either
Getting the same error. No luck finding a solutions yet.
I'm getting this as well when trying to open a project from earlier this year. Composite Wizard seems to be fine in more recent projects. Very strange and kinda scary as all the standard work-arounds to open project are failing as well.