The "install all" option did not work for me either (a couple of days ago ... I haven't tried this option again).
BUT, I had a lot of previous DimPro and Rapture libraries, and (I think) hardly any of these play even though they are in the Rapture Pro list. I have since read the Dan's FAQ's and it seems that I have to reinstall DimPro etc. and then Rapture Pro will supposedly automagically recognise everything. Haven't tried this yet though.
One thing really annoys me is that there are multiple versions of the same samples etc. all over the place on my system. It seems that every new version uses a different folder to install, and then duplicates existing files yet again. Too much space is wasted !
Ideally what I'd like to know is ... if Rapture Pro includes all DimPro and previous Rapture patches/samples, can I uninstall DimPro etc. ???
There's certainly a lot to be desired in the install process. For example, I could not find ANY logfile related to Rapture Pro on my system ?