Hi there, I am running Mountain Lion and iPhoto on my 2010 iMac. I have recently upgraded to ML from Lion and ever since, I cannot upgrade iPhoto to 9.4.2 I had been running iPhoto 9.3.2 on Lion and I can run iPhoto on my Mac on this version with no probs. I can install the update to 9.4.2 but whenever I start the app afterwards, it crashes on startup. I cannot do anything basically. Once I click the app icon, it crashes immediately. I tried reinstalling it a couple of times, created a new library etc. When I upgraded to ML, I did a clean install and just copied my files over from my time machine backup. Is there anything else I can do before reinstalling the whole system again?