I tried to install primus on a empy 2.5.4 joomla system. Installed und enabled the JA T3 Plugin first, but got the error message below installing primus

JInstaller: :Install: File does not exist /home/digifot1/www/test.unikarterie.ch/tmp/install_4f7f01095e37e/template_preview.png

Could you help me