Pianissimo (Acoustica) crashes Reaper 3.51

Pianissimo VSTi install failure 

Help! anybody... I purchased Acoustica's Pianissimo the other day and I cannot get it to install as a plug in. I have tried several approaches based on what I have seen in som e other forums; installing into a dedicated vsti folder, complete reinstallation, ect. Nothing works. I can see the .dll file but when Reaper scans it, it pauses a really long time and then just abandons the install. For the record, I could not get Pro Tools to read or see either. Any suggestions?

Did you have the demo installed first?

Never mind...after several attempts and restarts it finally took!