hello friend Scorpius, i am using "yappari 0.0.35 Build 4180" on my n900 since last 15 days. During this time, not found any kind of problem & enjoying Yappari App. in my mob. But, last night i installed Bluestack into my pc & Started whatsapp there too. And, i was easily operating whatsapp there on pc through Bluestack. But, after it, when i started yappari on my N900, it started registration process once again, Ask for my mobile no.. I wrote it down, but i was not getting sms for code. I presses the "Call Me" button too. A massege shows "A call will be requested." Then , i press "Done" Button. After few seconds, a msg shows on to my n900 screen that "Registraion couldn't be completed. Server response was: old_version." So my friend, plz confirm me, that my yappari stop working all because of i had started whatsapp through bluestack or by some other issue make it stop...???? Help friend & provide solution as soon as possible. thanks....