Why can't I use Cakewalk TTS-1 for instruments?

I downloaded and installed Cakewalk by Band Lab on my Windows 7 64 bit laptop computer, which already had Sonar 6 Producer installed. I'm wondering why I can't use many of the items that I could access in Sonar 6, like Lexicon Pantheon reverb (it appears the Pantheon.dll file is missing), or any of the several soft synths. The Band Lab documentation says this version is actually Sonar Platinum, so I would expect it to be even better than Sonar 6. I tried utilizing the Cakewalk TTS-1 soft synt

TTS-1 never supported anything higher than 96kHz. It runs at 44.1, 48 and 96kHz only. At 96kHz the plug-ins must be set to light load mode which is a per-instance session setting. There is a bug with the on/off button in the tone section. Pretty sure it has been broken for some time. This plug-in was made in Japan by Roland. Cakewalk never had the source code so BandLab does not either. You could try installing the 64bit TTS-1 bundled with SONAR 6 and see if it works better.