There's no official update patch. There is an though.
Transferring save files to Season 3
What error message? Are you using IMPORT to pull saves from v0.8.x? Are the v0.8 & Interlude versions from the same Android builder? You might need to ping whoever made the Android build you're using.
Check the
OP: Extras > Save. Read & follow the instructions.
Don't copy your normal saves across from 0.8, they won't work in Interlude/0.9. The transfer saves made in v0.8 are in a different place. On Windows it's:
%AppData%\RenPy\persistent\BeingADIKSeason2Transfer1366998845
You'd need to find that file on your Android version, and copy it to where ever it needs to go on Mac. Judging from PBS666's reply I'd guess that's here:
~/Library/RenPy/persistent/BeingADIKSeason2Transfer1366998845
But I don't use Android or Mac for Ren'Py games, so don't know for sure.
The Interlude is a short update, which mostly focuses on your ex-girlfriends time away in San Diego. We'll go back to the 'old' characters in the next 0.9 update (along with at least one of the 'new' characters).