It is still working, which is good, maybe it is just that it is an old save?
Maybe, I started play this game when 0.30.4 come out, so I don't know old save's compatibility, at least my 0.30.4 doesn't have any problem so far.
Hyao I think said to try and not use any old saves because they will prolly be buggy... So pretty plausible that's why.