eDrawings markup disabled

I'm trying to use the stamp tool in eDrawings, but the stamps are not visible and a message says...

"The stamp feature is not available. See help for information on how to enable this feature."

Same goes for the markup tool. No options to put a markup. Everything is gray-ed out.

eDrawings 2010 SP2.

SolidworksSolidworks Pdm enterprise Pdm