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SpiderAfter migrating a Joomla 1.5 web-site to Joomla 2.5 and next to Joomla 3.1 I have tried to install AkeebaBackup or PhocaGallery. Both installations gave the same error:

Error building Admin Menus

I digged tones of forum posts most of which recommended to remove any records tied to the problematic components from #__assets and #__menu. But there were no records about my components. Finally I found a solution!

Go to Extension Manager->Manage and refresh the extension's cache! Now you are able to install components!


I needed to reinstall my components to get the backend menu items for them.

The benefit of this approach is that no uninstall is needes, so all data is preserved!

P.S. There was an database error after the Joomla to J3.1. upgrade here:


I believe it has not been tied to the problem, but let me tell about it just in case.

When I pressed "Fix" button, I got error saying that the following SQL query was not executed:

ALTER TABLE `j25_content` CHANGE `title_alias` `title_alias` VARCHAR( 255 ) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL DEFAULT ''

I had to add the needed column title_alias using phpMyAdmin and then preform the fix operation again, which removed the column again.

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