Hey fellow MacRumors readers Here is my problem, Every new third party app i try to install/open in my MacBook it doesn't work. I just move the app to the Applications folder // try to open it from the downloads folder, it opens it on the dock, jumping without any window and when i click the icon at the dock it dissapears. Tried several things: - Checked that it happens with every new application that i download, they are free aplications and work in another mac. So it's not problem of the app i downloaded. - Tried creating a new user with admin rights and downloading + opening an app. Same result. - Disk utility Verify + Repair permisions on the boot disk, Still the same problem. Also checked that i've read/write permisions in the app folder. - Tried to install the app in the two applications folder /applications and /users/XXXX/applications . Same result. - Restarted/shutdown the system several times, updated the system software. One thing that i've seen strange is that, when i try to delete an app installed with app cleaner, it shows me items in the Library preferences etc...etc... When i try with one of the new apps i tried to move to the app folder, it just shows the app. This is why i think apps are not installing when i move them to the applications to the folder :S Is there a way to see any logs of this so i can troubleshoot it a little more? Can anyone think of one reason why this is happening? I've an appointment in the Genius Bar Apple Store this week, but I was hoping you could help me without having to make the trip to the Apple Store. Thanks for any help you could get me!