IPhone SDK: UIScrollView, zooming works on simulator but not device

I've got a UIScrollView set up to zoom an image. It worked fine under Beta 5, both on an iPod Touch and in the simulator.
In Beta 6, after changing the method scrollViewWillBeginZooming to viewForZoomingInScrollView the zoom works fine in the simulator, but it does not work on the iPod.
Any ideas?

Excited to hear that you were able to zoom image.
I am ****** off, sure because I am new in this.
I got one UIImageView in UIView.
And I can display Images.
I like to implement the pinch and zoom function.
From my googling I understood that UImageView should be inside a UIScrollView
But I dont have any idea how to do that.
Can you please send me the sample code for doing the same.
Thanks in advance.
If you guys no some books to refer , please inform me.
Expecting your help

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Hello Sir,
I received your replies and I'm extremely sorry for the inconvieniences you have faced with the mail server. From now on I will use this forum for any of my queries. I sincerely apologies you and this is what i received from your mail
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wsdd5.0\ive-2.2\runtimes\palmos50\arm\midp20\prc\
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pimop.prc
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around the 64k hotsync limitations and also to install the ARM natives.
OK, as you have suggested I navigated to the following directory
\wsdd5.0\ive-2.2\runtimes\palmos50\arm\midp20\prc
There I have found some more PRC files in addition to what you have suggested. OK, Do I need to HotSink only the following PRC files to my device or do i have to HotSink some more PRC files along with the following. If so, please let me know which one are they and from where to get them from WSDD 5.7.1 (either from ARM or IA32)
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IPhone SDK: UIScrollView, zooming works on simulator but not device

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