This may be the wrong thread, if so please redirect me to the right one! I have a disturbing problem which related to installing of application on my very first mac. The model specification is MacBookPro (early 2011), 2.2 GHz i7, OS X 10.6.7. Yesterday I bought a mac-compatible game through Steam's application, it downloaded completely and then I was given the possibility to "Start game". Whether I start it inside the Steam application or go to it's downloaded folder, the game (or application) pops up in the dock for a split second (I can see the accurate icon) and then disappear. I have searched in other forums and people do have some problems with this game; Splinter Cell Conviction. However they manage to at least install it, I dont. Ergo I cannot benefit from their solutions. I figure I should make my case to the Steam support, though I have had my mac for approximately three month and I remember this "problem" has happened to me before - Application show up in dock but then disappear and nothing happens. So, I am asking this question in a mac expertise forum in the application direction, this occurrence must have happened before regardless the type of application. What can I do to avoid this error? Thank you for any suggestions, as well as understanding my questionable english and posting in the wrong section.