Assegnate 1 su 5 stelle

Version installed on older Firefox still works on Firefox upgraded to 28. But won't install on a new computer running Firefox 28. Failure to install rates zero.

That fixed it. Thanks. back to 5 stars.

Questa recensione riguarda una versione precedente (1.0.5.09.1-signed.1-signed.1-signed) del componente aggiuntivo. 

fixed in http://hcalendar.blogspot.co.il/2013/12/mozilla-extension-hcalendar-version.html