I don't know what you're inability to find the app.nw folder means, that is definitely odd. Can you see app.nw in the old 0.37 version? In any case, you can try this new pre-patched Mac download. I realized that the version 0.44.2 that was available actually was pre-patched with the updated nw.js that may be causing you issues, so I re-deployed a version without it that may work. https://mega.nz/file/4WpWQJJS#h_l2xoLopkmMPo9hHpVZ8ya2l9cwqhaeBuZxhsHAbmo