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There was a problem sending the command to the program ... [sigh]

Got a proggy that reads data and writes .html files to the PC. My machine runs Windows 7 professional 64-bit. When I double click on such a generated .html file, Firefox shows an error message:

"There was a problem sending the command to the program"

Yet it still launches the page after that. The same thing happens sometimes with links in e-mails and such.

Obviously this is extremely irritating and it needs to stop. Here is what I have tried so far. As you can imagine I have been googling until I'm googly-eyed, and I tried some of the suggestions made by others. To wit:

- "Making Internet Explorer Your Default Browser and then Switching Back to Firefox"
Yeah. Tried that. It made no difference.

- "Setting the launch defaults to not use DDE"
Er... yeah. While that instruction seemed like there may be something to it, the instructions were given for "windows 2000/XP" Can someone explain to me HOW to do that in Windows 7 because I can't seem to find any such option. I went to the "Default Programs" section in the control panel but all that allows me to do is change the default program from IE to FireFox and vice versa, it doesn't let me specify any additional options for launch parameters.

- "Your Windoze profile may be corrupted. Try fixing your profile"
Thankfully I didn't go too far down THAT garden path. I created a brand new profile and tried launching a local .html file through that and the same thing happened. No point taking *that* suggestion any further.



So now I'm stuck. Any ideas, anyone? Ta muchly.
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Rouchie
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How?
Never mind. I found the setting. I switched it off. Made no difference :-(
Werner, would it be possible for you to post some of the HTML code that is causing this?  That may lead us to better ideas.
It sounds more likely that the html may be malformed or trying to access something FF doesn't
Understand.
Nope. It does this on random HTML files or links, and *before* it launches the page. It doesn't throw any errors in IE, Safari or Chrome.

But let me double check that.
LOL

Ok - I reduced the HTML to the bare minimum and it still fails. The following is the full content of the file:


<HTML>
<HEAD>
<TITLE>ZOMG</TITLE>
</HEAD>
<BODY>ZOMG IT FAILS *sob*</BODY>
</HTML>



:-)
<HTML>
<HEAD>
<TITLE>ZOMG</TITLE>
</HEAD>
<BODY>ZOMG IT FAILS *sob*</BODY>
</HTML>

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okeedoke. I'll go and give that a whizz. Back in a mo
Right

I tried that and it didn't help. But I had a long hard look at my add-ons and I uninstalled them one by one. When I got to one called "foxyproxy" it stopped doing this.

So foxyproxy has the problem. Not firefox. Or at best there is a compatibility issue here. and since I don't actually *use* foxyproxy anyway, I felt a deep and overwhelming sense of indifference at having just uninstalled that Add-on. Good riddance, I say, GOOOOOOOOD riddance. :-)
Thank you, all
ok, that is really STRANGE. Add-ons SHOULD only be effective in your current FF Profile.
If you actually opened a Different Windows Profile and tried to open FF with one of those files, that SHOULD not be touching your regular Users FF Profile.
Perhaps Foxy Proxy is more integrated than it should be, obviously, as removing it fixed it for you.
Glad to have helped.