I'm not sure if this is an FL Studio issue or Sylenth1 issue but when I load up the 32 bit version of Sylenth1 (I think 2.2 - latest version) within FL Studio 10.0.9 and or 10.6.0 Beta, I hear the Sylenth1 "Thank you for trying this demo" nagging sound even after registering my product with its License.dat file (I imported it within the product itself and put the License.dat into the installation directory).
I am using Windows 8 (x64) Release Preview Build 8400.
Can anyone confirm this as well? I have asked on KVR and no response yet from the Author. I just wanted to see if it wasn't just me.