After installing the *.deb from Citrix (in my case 13.2 for x64) you won’t find the PlugIn in the Firefox-PlugIn overview and the receiver is not working – a simple solution that worked for me on 2 different devices.
So, once again the good old problem of installing Citrix receiver on a new installed Fedora 22 (KDE). This time I was surprised getting a really new Citrix receiver dated 30.6.2015 (today is the 1st of July). And surprise: No rpm-package 🙁