fix

src/_VisualDVM/Utils.java

@@ -565,7 +565,9 @@ public class Utils {
        if (errors > 0) {
             state = TaskState.DoneWithErrors;
         } else {
-            complete = total;
+            if (complete==0){
+                complete = total = 1;
+            }
             state = TaskState.Done;
         }
         return new Pair<>(state, (int) ((((double) complete) / total) * 100));