New version does not work on iPhone 4S

I am a great enthusiast of this brand and was delighted to see this app coming. Great samples of sounds and videos + catalog of real equipments: excellent idea! Now unfortunately this latest update 1.2 does not work anymore on my iPhone 4S.
It simply launches for a second then quits unexpectedly!?
Please fix this bug.

Zilliet about Akrapovič Car Exhaust Systems