A couple of quick things to check. How long have you waited after the game freezes? Give it a good 2minutes. Sometimes SFS needs to sort itself out, especially if you have a large number of rockets in play. Do you have multiple unlaunched vehicles? If you're not sure go to map view and zoom in the rocket on the pad. If there are multiple arrows stacked, end mission on the extraneous rockets. Your saying you spawn your atlas and when you attempt to launch the game freezes and after reloading the game works? As Mooncrasher was saying some screenshots could be useful. I'm sorry, not an IOS user but there are people here that are.