Mac answers:

1. Clicking reopen after crash will immediately crash game - thanks to Steam and its DRM. Nothing to do here, sorry. You can't run Steam protected executables on OS X. Only through Steam "Run" button.
2. Illegal buttons [X][X] in hint screen - yep, known, Mac only, will be fixed
3. Candles - damn it we just fixed another candle dragging issue in .80! Prev. one was in Drag&Drop manager. This one is not, so it's different crash. Will pass on to QA.