Joomla Extension Manager - Install page is blank after upgrade from 2.5 to 3

1
votes

as described in the title after upgrading Joomla, when I go into Extensions - Manage - Install the page comes up with no options to upload, in fact the page is just blank with only the 'help' and 'options' buttons up on the top right.

Blank Extensions - install page

Obviously this means I can't download any extensions.

I originally upgraded from 2.5.8 to 2.5.28 with no problem, then following the suggested upgrade path I went from 2.5.28 to 3.5.1, still no problem. It was when I upgraded from 3.5.1 to 3.6.5 that I lost the ability to display the Install page, and thinking it was just an anomaly I upgraded to 3.8.3 where, unfortunately it still seems to be a problem.

Any ideas would be gratefully received, thanks.

2
phpjoomla
Can you send the link of this "following the suggested upgrade path I went from 2.5.28 to 3.5.1". I want to check if all the steps are mentioned. - Amit Ray
Hi, the link is: docs.joomla.org/Joomla_2.5_to_3.x_Step_by_Step_Migration**"Going to Joomla! 3.x Joomla! 2.5.28 can only be migrated to the latest Joomla 3.x in two steps. First migrate to version 3.5.1"** - Vexta
I did go this route, then Joomla update offered 3.6.5, which is where the problem first came up, then Joomla update offered 3.8.3 - I upgraded again but the problem is still there. - Vexta
The procedure seems to be correct. I recommend you to check this link which tells about the requirements for Joomla 3X. docs.joomla.org/Technical_requirements - Amit Ray
Thanks for that. I've decided to roll back using a manual backup made with cPanel to v3.5.1, which was the last version where the install section was working and then upgrade again from there. - Vexta

2 Answers

1
votes

SOLVED - Hope this might help anyone else that comes across this problem.

I was flummoxed at first but when I tried to open the page in two alternative browsers (Edge and Chrome) rather than my preferred IceDragon and it seemed to be displaying with no problem, I realised it must either be to do with a Firefox add-on or one of the many tweaks I had previously made to FireFox's about:config.

I tried restarting IceDragon with no add-ons but there was no change.

So, up next was the laborious task of comparing my probably over-paranoid about:config settings with the default settings. Turns out, it was the dom.storage.enabled setting, which I'd set to false. When I set it back to true, all was fine... Hooray!

One problem with FireFox and it's derivatives is that although you can easily change cookie settings and make exceptions etc, that doesn't deal with local storage. You can switch it off in about:config with dom.storage.enabled but that's only on or off (with no exceptions)

I am now using an add-on called Cookie Controller instead, to disable DOM Storage but still be able to whitelist trusted sites.

Glad I worked it out in the end... Thought I was going mad!

Thanks to everyone for their patience!

0
votes

Clearing the Joomla cache and also the web browser cache may help with displaying the new pages correctly.