1 files changed, 5 insertions, 1 deletions
diff --git a/stage1/Stage1Lib.scala b/stage1/Stage1Lib.scala
index d44f30b..cbf62dc 100644
--- a/stage1/Stage1Lib.scala
+++ b/stage1/Stage1Lib.scala
@@ -413,7 +413,11 @@ ${sourceFiles.sorted.mkString(" \\\n")}
 
 
   def actual(current: Dependency, latest: Map[(String,String),Dependency]) = current match {
-    case d: ArtifactInfo => latest((d.groupId,d.artifactId))
+    case d: ArtifactInfo =>
+      val key = (d.groupId,d.artifactId)
+      latest.get(key).getOrElse(
+        throw new Exception( s"This should never happend. Could not find $key in \n"++latest.map{case (k,v) => k+" -> "+v}.mkString("\n") )
+      )
     case d => d
   }