What device are you playing on?
On PC, normally this shouldn't happen...
On Android, I'm afraid uninstalling could be the problem.
It would have been better to simply update by running the apk without uninstalling 0.25.6.
Keeping just the savegame from 0.25.6 alone isn't enough, you would need to back up and copy over the 'persistent' file as well.
What might work is to use your save from 0.25.6, and a late-game persistent file from someone else. That might unlock some gallery scenes too early, but otherwise could work.
I'll upload one on our discord help channel, maybe it helps.