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I've recently upgraded to FireFox 22. Originally, a legacy XBAP I use always opened correctly in FireFox and had no problems displaying or running. As of 22, it won't even attempt to download the application, let alone try and display it.

I have the windows Presentation Foundation 3.5.30729.1 (NPWPF.DLL) installed, which is the same version I have been using in older versions.

Can anyone shed some light on any changes that would have effected this?

William Troup
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1 Answers1

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If it is some kind of legacy add-on - you should look for the description file - RDF - in your user profile.

Set the em:maxVersion to 22. (Or to 23 etc. if it will not work after next update)

Update:

You should also have npwpf.dll in Firefox plugins folder.

MikroDel
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