Thank guys! I guess I'm using a version from the "trusted channels" (they tend to be older than current versions), so I'm going to download the newest version and I'll keep you posted.
Regarding "reader: whatever", I'm using it on desktop, so I'm not sure what is the proper way to refer to this type of device (I guess this field is meant for something like Kindle or iPad xD).
Thanks again for the help, hopefully downloading the new version will work