Migration fails if junk files were present in snapshots dir
nes-91fa26986b6c07c39fadbfac61adabd6.png
nes-91fa26986b6c07c39fadbfac61adabd6.snapshot
nes-91fa26986b6c07c39fadbfac61adabd6.snapshot.NQDTMZ
It says that it cannot create dir for this game because it already exists and bails out.
CC @Yetizone