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I have a new Windows 7 64-bit laptop (32-bit Firefox 47.0) and just installed Fire IE 0.4.6.2 a couple of days ago. Unlike previous versions on my old Windows XP laptop, this one is causing my browser to greet me with the following popup when I first open firefox:

Scripts are usually safe. Do you want to allow scripts to run?

If I disable Fire IE, I don't get the popup. If I launch IE 11, I don't get the popup. I've tried Fire IE in default IE 7 Standards mode, in IE 8 Standards mode,and now in IE 11 Edge mode, and I still get the popup immediately after changing the mode.

There is also a web applicaiton at work called Service Portal that doesn't play nice with Firefox+FireIE, but works fine with just IE. I'm not sure what FF, FireIE, and IE versions I have at work.

Other than those issues, it's a solid program and I use it fairly regularly for web sites that require IE.