Hi,
I allready tried that, even uploaded by sftp and tryed to install from folder. That's why I tryed to install another template to see if permissions are the problem. No problems with other template... Sure, I have seen, that installer.xml is inside...
Joomla\Filesystem\File::copy(/mnt/rid/36/76/xxxxxxx/neu[TMP]/install_6a3902c66e92b/template/index.php, [ROOT]/templates/shaper_educon/index.php): Copy failed
You are right, permissions would explain. I didn't change anything. Can I just copy the new shaper_educon/index.php by hand via sftp?