Error: object Project is not a member of package play

[rvantassell]

Using Typesafe Activator (1.3.4) on both CentOS and Cygwin, when trying to add Kafka Web Console 2.0.0 as a project, I get the error:

[...]
Done updating.
C:\path\to\kafka-web-console-2.0.0\build.sbt:18: error: object Project is not a member of package play
play.Project.playScalaSettings
     ^
Type error in expression
Failed to load project.

Though everything seems to download and update successfully, a smoking gun in the process is the very first line of the build (under Cygwin):

Lost or failed sbt connection: Connection closed
Loading project definition from C:\path\to\kafka-web-console-2.0.0\project
Updating {file:/C:/path/to/kafka-web-console-2.0.0/project/}kafka-web-console-2-0-0-build...
[....]

I had considered this might be related to potential stray proxy issues in Activator, but that does not appear to be the case (especially since all other downloads are successful). I'm assuming this may just be a bad import and/or path/directory structure related issue that I'm missing.