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How do I open an XUL file with the Remote XUL Manager addon? (MAC)

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jj64
jj64
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I'm kind of a newbie, and have never seen an .xul file in my life. My grandmother has an .xul file that she's trying to open, but it won't work. Stupidly, I updated the OS from Snow Leopard (10.6) to El Capitan (10.11) and I'm not sure if that was the source of the problem. I looked everywhere for a solution, or some way to open it, but all evidence pointed to Mozilla Firefox. When I double-click the .xul file, it opens in Firefox and the error message reads:

Remote XUL

This page uses an unsupported technology that is no longer available by default in Firefox. 

   Please contact the website owners to inform them of this problem.

Okay..? I tried installing the Remote XUL File Manager to help me with this. I tried to add the domain by copy and pasting the url of the file, which is "file:///Volumes/ANCESTRY/HannahLane1940census%20-%20Copy%20-%20Copy.xul". But I get:

XML Parsing Error: undefined entity Location: file:///Volumes/ANCESTRY/HannahLane1940census%20-%20Copy%20-%20Copy.xul Line Number 586, Column 7: <checkbox id="trackingProtection"

^

When I open it on her Windows laptop, the file extension changes to .htm, which I assume is because Macs don't support .htm or .html file extensions anymore. When I try to open that in any browser, I get:

%brandDTD; %globalPreferencesDTD; %preferencesDTD; %privacyDTD; %tabsDTD; %searchDTD; %syncBrandDTD; %syncDTD; %securityDTD; %sanitizeDTD; %mainDTD; %aboutHomeDTD; %contentDTD; %applicationsDTD; %advancedDTD; ]>

I have tried installing previous versions of Firefox, (I have 44) but to no avail. I have also tried running it in safe mode, and completely restarting and refreshing the Firefox application itself. Can anyone help me? I honestly feel guilty for updating to El Capitan, and I hope there's a way to use Remote XUL Manager so I can open this file.

I'm kind of a newbie, and have never seen an .xul file in my life. My grandmother has an .xul file that she's trying to open, but it won't work. Stupidly, I updated the OS from Snow Leopard (10.6) to El Capitan (10.11) and I'm not sure if that was the source of the problem. I looked everywhere for a solution, or some way to open it, but all evidence pointed to Mozilla Firefox. When I double-click the .xul file, it opens in Firefox and the error message reads: Remote XUL This page uses an unsupported technology that is no longer available by default in Firefox. Please contact the website owners to inform them of this problem. Okay..? I tried installing the Remote XUL File Manager to help me with this. I tried to add the domain by copy and pasting the url of the file, which is "file:///Volumes/ANCESTRY/HannahLane1940census%20-%20Copy%20-%20Copy.xul". But I get: XML Parsing Error: undefined entity Location: file:///Volumes/ANCESTRY/HannahLane1940census%20-%20Copy%20-%20Copy.xul Line Number 586, Column 7: <checkbox id="trackingProtection" ------^ When I open it on her Windows laptop, the file extension changes to .htm, which I assume is because Macs don't support .htm or .html file extensions anymore. When I try to open that in any browser, I get: %brandDTD; %globalPreferencesDTD; %preferencesDTD; %privacyDTD; %tabsDTD; %searchDTD; %syncBrandDTD; %syncDTD; %securityDTD; %sanitizeDTD; %mainDTD; %aboutHomeDTD; %contentDTD; %applicationsDTD; %advancedDTD; ]> I have tried installing previous versions of Firefox, (I have 44) but to no avail. I have also tried running it in safe mode, and completely restarting and refreshing the Firefox application itself. Can anyone help me? I honestly feel guilty for updating to El Capitan, and I hope there's a way to use Remote XUL Manager so I can open this file.

Opaite Mbohovái (5)

cor-el
cor-el
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Did you check the content of this file by prefixing the link with the view-source: protocol?

  • view-source:file:///Volumes/ANCESTRY/HannahLane1940census%20-%20Copy%20-%20Copy.xul

Were did she get this file?

Does Ancestry end such files?

jj64
jj64 Porandu apoha
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I'm not sure where she got it.

I entered that into firefox and got a bunch of stuff, I don't know what any of it means.

cor-el
cor-el
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That is the source code of the about:preferences page: view-source:about:preferences You can remove that file as there is no need to do anything with it.

jj64
jj64 Porandu apoha
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So, does that mean there's no way to see this file? Do you know if it was because I upgraded the OS?

cor-el
cor-el
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There is not need to do anything with this file as this file is supposed to bring up the about:preferences page and is of no use. It probably got saved by accident like doing a "Save Page As" while the about:preferences was visible (had focus).

If you want to replicate this then open the about:preferences in a tab and save that page and compare the files.