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Since upgrading to J! 3.9.0 I'm getting this error on EVERY extension update except for the few who use an update routine that appears to bypass normal Joomla workings - StackIdea's EasyBlog and JoomlaShine's Uniform are 2 that will still update OK.

However, everything else (ALL of which have happily updated from the Update area in the past) fails. The extensions are all 3 types (component, module, and plugin) and are both paid and free. They all require manual installation to update.

I checked my /tmp path and it's correct and writable. configuration.php is, as I would expect, unwritable, but I saw in a different post some else's Folder Permissions screenshot showing it as writable so I changed it to 777. Still fail to install anything.

As I manage some 80 odd sites, this is a major time waster. Is anyone else experiencing this?

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OK, found the issue and solution, but not the cause!

I went to the thread On RegularLabs' site - https://www.regularlabs.com/forum/exten ... ions#83452. In this, Peter talks about "some" server setting (he doesn't know which - or didn't at the time of writing) changing the case of the Header names. Because Joomla is looking case-sensitive, the installs failed.

He posted a patch for libraries/src/Installer/InstallerHelper/php which I copied and saved, then uploaded to 2 of my sites. Previously failing updates now performed perfectly.

  • I've just installed v3.9.1, which should include this patch, but I still get this error. Any advice? – Puce Dec 30 '18 at 23:00

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