sorm version causing activator to fail compile

Question

I have the following in my build.sbt:

scalaVersion := "2.11.6"

libraryDependencies ++= Seq(
  jdbc,
  cache,
  ws,
  specs2 % Test,
  "org.scalacheck" %% "scalacheck" % "1.11.1" % "test",
  ("org.scala-lang" % "scala-compiler" %    scalaVersion.value).exclude("org.scala-lang.modules", "scala-parser-combinators"),

)

If I add:

"org.sorm-framework" % "sorm" % "0.3.15"

It still works. IF I go to 0.3.18 it fails.

[error] Modules were resolved with conflicting cross-version suffixes in {file:/home/daveh/play-scala/}root:
[error]    org.scala-lang.modules:scala-xml _2.11, _2.12.0-M1
[error]    org.scala-lang.modules:scala-parser-combinators _2.11, _2.12.0-M1

Is this to be expected?