Have I read the related troubleshooter articles above before posting (which pages?)? Yes
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Have I searched the tickets before posting? Yes
Have I read the documentation before posting (which pages?)? No
Joomla! version: 1.15.25
PHP version: 5.3.3-7+squeeze3
MySQL version: 5.1.49
Host: www.gsvTT.de
Akeeba Backup version: 3.4.3
EXTREMELY IMPORTANT: Please attach a ZIP file containing your Akeeba Backup log file in order for us to help you with any backup or restoration issue. If the file is over 2Mb, please upload it on your server and post a link to it.
Description of my issue:
I have installed the new Akeeba Pro over an existing free Version. Then I have configured the AkeebaPro component with the option "System Restore Point" und have made my first backup. All was done with no error messages. Unfortunately now I can't use "Extension" > "Install/Deinstall" Option. I get the message:
500 - Error - Unknown controller installer .
I have found following hint :
If you get a blank page or an error message (e.g. a 500 - An error has occurred page with something like Unknown controller installer underneath) you will need to do one more step before reinstalling Akeeba Backup. Go to Extensions, Plugin Manager, find the System - System Restore Points plugin and disable it. Then retry installing Akeeba Backup.
But in my Plugin-Manager I don't find any "System - System Restore Points"-Plugin. Please help me.
Greetings
Alfred