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I'm working on a cocoa app using Xcode 4.5.1. My app uses a webview and bundles a plugin to use with that webview.

When I'm compiling my code and running my app, it works fine, and the plugin is loaded and used in the webview.

However, if I enable the sandbox environment for my app, it stops working. The plugin is not loaded.

When running out of sandbox, I get this log from my plugin:

10/22/12 4:40:54.041 PM WebKitPluginHost[43018]: Instantiating Plugin

When running in the sandbox, I don't get anything from my plugin, but the webview does show a blank box where my plugin view should be. It does not show a Missing plugin message as it would if the plugin was not here.

I tried to add this to the entitlements of my app:

com.apple.WebKit.PluginAgent

as a string to the 

com.apple.security.temporary-exception.mach-lookup.global-name array

but with no luck.

Do you know how I can debug this?

Georg Fritzsche
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Olivier Pallière
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1 Answers1

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See my response to How do I add a Webkit plugin to my sandboxed OS X app WebView?

In summary: running in 32-bit mode will work, because plugins run in the same process as the host application. In 64-bit mode, it appears the plugin agent lacks permission to launch the plugin process, causing the load to fail silently.

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J. Perkins
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