I too am having sync problems. Mac OS 10.7.5 and upgraded to 5.0.3 and now, doesn't sync. I have it set to sync every 30 minutes and that doesn't happen. I have to manually sync. Use to work just fine and I very much depended on this app as I go from mac to ipad to phone all day long when out in the field etc. Now it takes a bit more effort when it use to just work like advertised. I would appreciate better testing on all platforms before just pushing out a multitude of updates. Working correctly is better than a bunch of bells an whistles that most people don't want or need. Syncing is a big deal!!