I started Producer X3 one day (Have had and used it for some time) when I tried it insert TTS-1 it said that it may not have been properly installed(?) Since I have used it on all versions I owned, from Sonar all through all the versions I own and use it has been properly installed. What happened.(Note: All the other Direct X Soft Synth stuff works).
 
Thanks much

Assuming you are not running 88KHz sample rate (which the plug-in doe not support) try re-installing it. Run the X3 installers and choose the advanced install option, later on the installer will provide a checklist of plug-ins to install.

I think also it may be something new coded into it. I couldn't run it under BIAB 2014, which I always used to do. So just having an older install of it on your machine may not guarantee that it will work. So ,download/ reinstall the most recent version of it.