Upgrading plugin to Creative Cloud SDK

Hello,

I've got a plugin that I'm attempting to upgrade from CS6 to the CC SDK.  The plugin loads without issues in CS6 but as soon as I change the SDK and recompile and attempt to load it in Creative Cloud I get and invalid plugin id.  AEGP_RegisterCommandHook() from RegisterSuite5() returns a 3.

The Plugin Id really makes no sense:

In CS6 I get a reasonable value like 17.  Does anyone have any ideas where to look?

Thanks!