Hi. For the last several months, I have been running Firefox Portable and Waterfox Portable at the same time. Then today, I experimented with Firefox Portable and Waterfox Full Installation at the same time. The problem is that both Waterfox browsers, Portable and Full Installation, are extremely weak browsers. There is a video cam website that I visit and if I just open one person's webcam it can freeze on occasion. If I have two webcams open, it freezes up a lot more. I can forget running my own webcam. But none of these problems exist in Firefox Portable
So I finally decided to just get rid of Waterfox and see if I could run two instances of Firefox at the same time. Following the instructions on this forum, I was easily able to run Firefox Portable (my main browser that has all my bookmarks and other data) and Firefox Full Installation (that I only use for the webcam website and I have the navigation bar hidden) side by side. Works fine. If Firefox Portable is open, I can open up Firefox Full Installation with no problems. And vice versa
But there is ONE PROBLEM. I took some bookmarks from Firefox Portable and I moved them to my USB Drive. And I already have Firefox Portable registered (edit: using Register Firefox Portable 1.1) and all my bookmarks are set to open up with Mozilla Firefox Portable Edition. They were opening just fine. But ever since I changed the .ini file, I can no longer open up those bookmarks that I have saved on my USB Drive. It will tell me that "Firefox is already running, but not responding. The old Firefox process must be closed to open a new window." And that's even when just Firefox Portable is running. So it has something to do with the .ini changes. I only changed two things. I allowed multiple instances and I disabled splash screen. Nothing else. So basically what I am saying is, the .ini changes let me run both browsers same time no problem. But if I want to take a bookmark that is saved to my USB Drive and open it, I get that error message, even though a.) Mozilla Portable is the only browser running and b.) I have Mozilla Firefox Portable Edition registered as my default browser. Do you have any ideas? And this is my .ini file.
I don't think my system details are going to help much, because this is a problem with Firefox Portable and not my system. But if you really need to know, ask me whatever you need to, and give me some time to find to report back. I am running Windows 10 and I always check for updates once or twice a day. And I am guessing that I am using the 64-bit version of everything, because that is what I usually do, but I can check and confirm later. Both Firefox Portable and Firefox are updated to latest versions. Installation paths, does it matter? Firefox is set to default location. Firefox Portable not default location. If I remove the .ini file or set AllowMultipleInstances to false, the desktop URL links work again. But of course I don't want to remove the .ini file or set AllowMultipleInstaces to true, because I want to run Firefox Portable and Firefox (Full Installation) at the same time.