I currently have an issue with Wavelab 7 not recognizing 32-bit plug-ins (many), so my world has gotten complex:
1) To use 32-Bit Flux or Algorithmix plug-ins that I paid good money for and love dearly for Mastering. Wavelab 7-64 bit will not recognize them.
2) As a result, I have to install the 32-bit version of Wavelab 7. This alone is very doable and successful, but!
3) Waves enters the picture and screws this all up. WaveShell has some fault that seems to crash Wavelab AND Sonar X2 many many times over when trying to open them, since it installs both 32 and 64-bit versions.
Even if I try to "hide" the 32-bit versions of Waves from Sonar, and "hide" the 64-bit versions from Wavelab 7, they both still regularly crash when trying to open Waves plug-ins.