I installed it and it worked. If I recall you had to pick which software you had installed. I just looked in the hand book I have, there is a publisher for ProE, you may need to pick this at the eDrawings web site.
I installed the free Edrawing publisher some time ago and it worked fine - then it time expired. When I tried to install it again - it would not install the publisher (and the associated icon) because of the first (expired) installation. In other words you can't continually (re)install the free version - they are wise to it. Maybe this is your problem.
Actually, I installed the same version on my laptop runnung WF2, works great. But the workstation running WF1 doesnt show the EDrawings icon on the menu.
By the way, its the first install of eDrawings on both computers. And I did pick the version for ProE.