online synchronization failed

Hi,
I’m trying to open up a trial version of Halion Symphonic Orchestra. I have downloaded it and it is sitting in my Steinberg Library but when I start up Cubase it tells me “some content could not be loaded. Either licenses are missing or time-limited licenses have expired: HALion Symphonic Orchestra Factory Presets 01”
I wondered whether my ELicencer wasn’t working properly and opened that up whereby it prompted me to perform maintenance tasks and when I did so I was informed that “There are still other applications running which prevented this process from succeeding” and that online synchronization has failed.
Does anyone have any ideas?
Much appreciatied in advance
Francis