Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8b2) Gecko/20050406 Firefox/1.0+ 10:18 PDT repro: 1.open FF 2.open Extensions (manager) and press: more extensions 3.pick any extension 4.install it. 5.the message acc. Summary pops up sidenotes: 1.addons.mozilla.org somehow needed to be whitelisted again (I never removed it though) 2. it did not recognise me as FF1.0+ / windows

Just to make it clear, /this/ bug is about Firefox showing an error message "Unexpected error 203" when installing extensions. This isn't a problem with current Mozilla Suite build. Relatively recent regression, Firefox ~20050401 build works fine.

I also received this error message. I installed FlashGot 0.5.8 from www.extensionsmirror.nl. The extension manager asked me if it was ok to install, I said yes, extension manager displayed, progress bar rose to 100%, then "unexpected error-203". On closing and re-opening the browser, the extension was installed fine. Note: I previously had FlashGot 0.5.7.8 installed before.

http://lxr.mozilla.org/seamonkey/source/xpinstall/src/nsInstall.h#177 EXECUTION_ERROR = -203,

seems to be gone in 20050407 but I had the same problem with my 20050406 build. Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8b2) Gecko/20050407 Firefox/1.0+

WFM w/ both mozilla.org and extensionsmirror.nl Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8b2) Gecko/20050407 Firefox/1.0+

Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8b2) Gecko/20050407 Firefox/1.0+ ->WFM

-203 would be pretty odd -- the XPInstall engine only uses that code when it cannot launch an executable from an install.js script. Firefox extensions don't use install.js, and they don't contain binaries to be launched. This should be an extremely rare case, not every single .xpi. The Firefox extension manager doesn't appear to use "203" anywhere (good, that'd be confusing) so I don't know where else it could come from. Oh, sidenote 2) -- if it didn't recognise you as FF1.0+ was it giving you suite-only extensions? I still wouldn't expect a binary, but at least you might be in the install.js realm rather than install.rdf

fwiw, this happened with all extensions I have checked (some of them were Firefox-only, i.e. no install.js inside). The extensions were from my local archive.

(In reply to comment #7) > Oh, sidenote 2) -- if it didn't recognise you as FF1.0+ was it giving you > suite-only extensions? I still wouldn't expect a binary, but at least you might > be in the install.js realm rather than install.rdf I reinstalled this build, it recognises me as FF1.0 (i/o 1.0+) I'm almost sure it showed Linux as os, but only getting windows now (correct)