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Firefox 31.8.0 for eCS (OS/2) Beta 5

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@dmik dmik released this 24 Jul 13:24
· 165 commits to master since this release

This is the fifth beta release of Firefox for eCS (OS/2) which updates Firefox to version 31 ESR. This is a big step forward because the official Mozilla team dropped OS/2 support from the main development line between versions 24 and 31 and in this release we carefully restored it back including all previously existed OS/2 features. We also ported new Firefox code to OS/2 and fixed some old bugs. This includes reviewed JavaScript support where we finally fixed infamous crashes of Firefox on websites with heavy JavaScript usage and generally improved JavaScript performance.

This release also brings audio support in HTML5 content and in JavaScript. Note that this support requires the libkai library to be installed (otherwise you will get a message that XUL.DLL cannot be loaded). Just do yum install libkai if you use RPM/YUM or take the specified DLL from the corresponding RPM archive and place it into one of the directories on your LIBPATH:

The CHANGES.OS2 file contains more detailed list of changes.

The README.OS2 file contains software requirements and detailed installation instructions.


  1. If you find a bug (which is likely), please create an issue at the issues page. But before you create a new issue, be sure it is not already reported by searching through the existing ones using the Search field at the top of this page.
  2. When Firefox crashes it creates a trap report that may contain useful information for the developers. These reports are saved in .TRP files created in the directory where firefox.exe is installed. By default these reports contain only basic information. In order to make them even more useful (and therefore make a fix for your problem much more likely) please do the following:
    • Install the latest EXCEPTQ runtime from (currently, this one is the latest).
    • Install the Firefox symbol files by downloading the firefox-dbgsym archive from the link below and unzipping it to the same directory where you installed Firefox.
    • Make Firefox crash again and attach the resulting .TRP file to the issue describing your problem.