The site is Joomla 2.5.19. When it was originally installed it was 2.5.14 and it has only been upgraded to 2.5.19 yesterday. When it was 1.5, I used to update Joomla via Admin Tools, and as it has never shown a Joomla upgrade available in Admin Tools, I never upgraded it.
Since it was installed, its been working fine and I never did anything to it, but for some reason reCaptcha stopped working. Last week I tried to Upgrade it, but the Upgrade option wasn't visible in Components. I went into Extension Manager --> Manage and found the Joomla Upgrade module, but it had a little padlock on Status field (as did a whole lot of other things). I tried Enable, but I get a message "Edit state is not permitted". I refreshed the cache. I tried using Admin Tools to check permissions. I looked in the database to make sure that admin is still a Super User and it is.
I posted a query on the Joomla Forum, and they said I should upgrade to 2.5.19 - I did this manually, but it still is the same. The only other thing I get from the Joomla Forum is the inane comment that I am not logged in a Super User or I have forgotten my password!!!
In desperation, I went restored the backup. It's a big site and it takes hours, but it's still the same.
I tried restoring the original Backup when the site was first created but it seems that this hasn't changed since the original installation.
It's a huge site and it will take weeks to restore all the music if I have to start over. I'm haoping that you might be able to point me to the cause of the problem.
Sorry if this is out of Admin Tools remit, but I'm desperate.