Hello, Do you have any logs on what happens when you try to load the plugin on Windows 2008 server? Given that you mentioned that it is working on 64-bit Windows 7, I would think this might have to do with some access credentials.

Any logs from the developer console will be very helpful to narrow down the issue.

Thank you

Hi Gnittala,

Thanks for your reply.

I debug the javascript code in firebug on windows 8 and found that firefox would be not responding while executing "document.body.append(myPlugin)".

My javascript code is below: function openLocalApp(cmdPath, cmdLine) { var npMyPlugin = navigator.mimeTypes["application/mozilla-npruntime-scriptable-plugin"]; if (npMyPlugin) { var myPlugin = document.createElement("embed"); myPlugin.style.visibility = "hidden"; myPlugin.type = "application/mozilla-npruntime-scriptable-plugin"; myPlugin.width = 0; myPlugin.height = 0; document.body.appendChild(myPlugin); myPlugin.foo(cmdPath, cmdLine); } else { alert("Failed to create the plugin!"); } }

And firefox plugin's source code copys from the following link: http://mxr.mozilla.org/seamonkey/source/modules/plugin/samples/npruntime/ Just changed a little.

I know the sample is very old, but newer proper sample couldn't be found. So if you can give me a newer sample, I'll appreciate. Thanks again.

You didn't mention the code snippet where your plugin is getting instantiated and seeing that will be helpful. Are you sure that the myplugin object was non-null when you were trying to make the appendchild function?

Also, can you please use dependency walker to check your DLL for missing dependencies on Windows server 2008 64-bit. May be the DLL load is failing because some library is missing.

I am not well versed with the changes in the NPAPI plugin architecture, so it might be worth posting your query to this group Mozilla plugin dev