title: Object Proto already defined
body: <p>I'm using Scala 2.11.8 and trying to add protobuf.</p>
  <p>Here is my log :</p>
  <blockquote>
  <p>[info] Protoc target directory: /home/user/Git/tortle/target/src_managed/main</p>
  <p>[info] Protoc target directory: /home/user/Git/tortle/target/src_managed/main</p>
  <p>[...]</p>
  <p>[error] /home/user/Git/tortle/target/src_managed/main/msgsp/IngInfo/IngInfo.scala:46: IngInfo <strong>is already defined as case class</strong> IngInfo</p>
  <p>[error] final case class IngInfo(</p>
  <p>[error] 60 errors found</p>
  </blockquote>
  <p>please, what am I making wrong ?</p>
  <p>I have tried a lot of things but this error always come back :/
  Thanks.</p>
  <p>My build.sbt :</p>
  <pre><code>libraryDependencies ++= Seq(
  &quot;com.trueaccord.scalapb&quot;     %% &quot;scalapb-runtime&quot;     % &quot;0.6.6&quot;,
  &quot;com.trueaccord.scalapb&quot;     %% &quot;scalapb-runtime&quot;     % &quot;0.6.6&quot; % &quot;protobuf&quot;)
  PB.targets in Compile := Seq(
  PB.gens.java -&gt; (sourceManaged in Compile).value,
  scalapb.gen(javaConversions = true) -&gt; (sourceManaged in Compile).value)
  </code></pre>
  <p>My plugins.sbt</p>
  <pre><code>addSbtPlugin(&quot;com.thesamet&quot; % &quot;sbt-protoc&quot; % &quot;0.99.18&quot;)
  libraryDependencies += &quot;com.thesamet.scalapb&quot; %% &quot;compilerplugin&quot; % &quot;0.7.1&quot;
  </code></pre>
  <p>My *.proto files are in src/main/protobuf folder and start like this :</p>
  <pre><code>syntax = &quot;proto3&quot;;
  package msgsp;
  message Tortle{}
  </code></pre>