While editing events at Event List Editor, MMF2, randomly, for no real reason (always after clicking with left mouse button at anything), goes immediately closed. No bug report - looks like Windows doesn't notice it. No processes are left in Task Manager, there is no slowdown, no greater CPU usage. If this is any clue for you, I'm simultaneously facing several other issues - sometimes MMF inits very slowly or it cannot save my apps. Build 248. Any ideas?