Standard (32/64-bit Universal), WebKit, Flash Plugin and Leopard

I have an Xcode project which builds a Cocoa desktop Browser application.

My Browser links to the standard WebKit.framework on the system (it does not embed its own WebKit.framework).

The "Base S开发者_JS百科DK" for my Xcode project is set to "Mac OS X 10.5".

The "Valid Architectures" for my Xcode project is set to "i386 ppc ppc64 ppc7400 ppc970 x86_64".

The "Objective-C Garbage Collection" for my Xcode project setting is set to "Unsupported".

I am building my project on Snow Leopard with Xcode version 3.2.

When I build the Browser with "Architectures" set to "32-bit Universal", the Browser runs fine on Snow Leopard and Leopard (as a 32-bit process) and displays Flash content correctly.

However, when i build the Browser with "Architectures" set to "Standard (32/64-bit Universal)", I have a serious problem on Leopard. In this case, the Browser runs fine (as a 64-bit process) on Snow Leopard and displays Flash content correctly. However, on Leopard it runs fine (as a 64-bit process) except that it will not display Flash content. It seems the Flash plugin never loads.

Can anyone give me any advice on how to build my Browser as a "Standard (32/64-bit Universal)" so that WebKit will load the Flash Plugin on Mac OS X Leopard 10.5? Or is there some reason why this cannot work?

(NOTE: in all cases I have the latest Flash PlugIn installed on the system - 10.0.32.18)

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Flash will not load in 64bit on Leopard as it is 32bit code. WebKit on SnowLeopard can run Flash in 64bit because it runs Flash in a completely separate (32-bit) process.

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Probably the flash plugin is 32bit only on Leopard