The treehouse bug is not hard to fix, it just seems like they moved some things around and the code is looking for the wrong filename. I extracted the background for the tree house stairs and renamed to match the line in the error message and it fixed it for me.
Just drop the attached file inside you Summertime Saga/Game folder.
(It's just a .jpg file so don't worry about it messing anything; since it seems i'm not the only one having this particular problem at night it would seem that is the particular version that is leading to this error, so used the night version)
Just drop the attached file inside you Summertime Saga/Game folder.
(It's just a .jpg file so don't worry about it messing anything; since it seems i'm not the only one having this particular problem at night it would seem that is the particular version that is leading to this error, so used the night version)