JAL-2068 reinstated false return value for notifyWorking

[jalview.git] / src / jalview / workers / AlignCalcManager.java

diff --git a/src/jalview/workers/AlignCalcManager.java b/src/jalview/workers/AlignCalcManager.java
index 191e8c7..addb372 100644 (file)
--- a/src/jalview/workers/AlignCalcManager.java
+++ b/src/jalview/workers/AlignCalcManager.java
@@ -131,8 +131,7 @@ public class AlignCalcManager implements AlignCalcManagerI
     {
       if (inProgress.contains(worker))
       {
-        System.err.println("Implementation error: duplicate run of worker "
-                + worker);
+        return false; // worker is already working, so ask caller to wait around
       }
       else
       {