Hello everyone.
Hi
But when I exported animation from upk,the window reported that many files were not found.
I suppose it's on your first (black) screenshot? You misread the message, there's NOTHING about "files". Just ignore it.
I pressed the scan contents button and it showed that the 00006760.upk has 1000+ anim files.
But I only exported 17 animset files.
Animation SEQUENCES. Not AnimSets. Just count total count of sequences in all of your 17 AnimSets.
what should I do next to solve this problem.
There's no problems on your case at all.