Exception on update data.

[anonymous]

Using any of the update data options throws an exception when the list isEmpty() function is used on a Storage<T> object. It appears to need this instead:

diff --git a/src/org/openstreetmap/josm/actions/downloadtasks/DownloadOsmTask.java b/src/org/openstreetmap/josm/actions/downloadtasks/DownloadOsmTask.java
index ea7de03..8f7ec44 100644
--- a/src/org/openstreetmap/josm/actions/downloadtasks/DownloadOsmTask.java
+++ b/src/org/openstreetmap/josm/actions/downloadtasks/DownloadOsmTask.java
@@ -138,7 +138,7 @@ public class DownloadOsmTask extends AbstractDownloadTask {
                 return;
             if (dataSet == null)
                 return; // user canceled download or error occurred
-            if (dataSet.allPrimitives().isEmpty()) {
+            if (dataSet.allPrimitives().size() == 0) {
                 rememberErrorMessage(tr("No data found in this area."));
                 // need to synthesize a download bounds lest the visual indication of downloaded
                 // area doesn't work

[anonymous]

Actually, this appears to be because of a shadowed variable/method in DataSet.

[bastiK]

Looking at the code, I don't see why this should be the case. Is there an easy way to trigger that exception and can you provide stack trace?