I tested my main studio computer again and confirmed that rx2 drum files still won't load in Reaper 5.40
I'm running Win 8.1 - HP desktop 12 GIGS Ram i7
Motherboard:
http://support.hp.com/ca-en/document/c03885123
My DELL i5 Laptop running Win 8.1 loads the RX2 files & plays them fine.
I also have an older version of Reaper 32 bit installed on my main studio computer and it will load and play the rx2 files.
If anyone has a similar system to mine, I can send you some rx2 files to test.
I'd really like to start using these rx2 along with the waves because the rx2 are far more versatile.
Send me a private message if you would like me to send some rx2 to test.