I have a requirement to use FireFox Portable 10.0.3 and Java Portable (version 6 Update 45) for a web app that has these stringent version requirements. On Windows XP (SP3), when a local installation of Java is present, Java in the FireFox portable 10.0.3 and Java Portable 6 Update 45 package does not work. It launches java (I see java.exe in the process table), but it just hangs and does nothing. On Windows Vista, Windows 7, and Window 8 it works fine - just not on Windows XP.
Doing some troubleshooting, I see that XP calls the java plugin differently - it launches java.exe with several arguments, some of the arguments point to PATHs that are the local java install rather than the java portable directories. I can only imagine that this is what is causing the problem. On Vista/Win7/Win8, jp2launcher.exe is used to call the java plugin, and it works just fine.
Any ideas would be helpful.
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I don't think modern Java works properly with an outdated Firefox build like that. You may be able to use an older Java with it, though.
https://sourceforge.net/projects/portableapps/files/Java%20Portable/
Keep in mind we don't support or recommend either. These horribly outdated web apps really need to be updated.
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