I just tested the latest version on a fresh install of joomla and everything works fine, probably there's something with your site configuration.
Please, can you turn on the Joomla debug and set the error reporting to "Development"? You can find both fields inside Global configuration.
hi, actually setting it up as suggested it doesn't anymore a blank page but this error message:"
Strict Standards: Only variables should be assigned by reference in /web/htdocs/www.joomlawebdesigner.it/home/plugins/system/jumirouter/jumirouter.php on line 20 Strict Standards: Non-static method JInput::getArray() should not be called statically, assuming $this from incompatible context in /web/htdocs/www.joomlawebdesigner.it/home/administrator/components/com_tracktime/controllers/trackers.php on line 14 Catchable fatal error: Argument 1 passed to JInput::getArray() must be an array, string given, called in /web/htdocs/www.joomlawebdesigner.it/home/administrator/components/com_tracktime/controllers/trackers.php on line 14 and defined in /web/htdocs/www.joomlawebdesigner.it/home/libraries/joomla/application/input.php on line 166"