Unexpected format of ID replied by the server. Got ''

[HB9DTX]

Error while uploading any change. Not possible to go further.

Downloading an area is OK, editing / adding items is OK, but when saving to database, the following error occurs:

Unexpected format of ID replied by the server. Got '

Build-Date: 2010-07-17 01:31:31
URL: ​http://josm.openstreetmap.de/svn/trunk
Last Changed Author: bastiK
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last Changed Date: 2010-07-16 23:44:00 +0200 (Fri, 16 Jul 2010)
Last Changed Rev: 3376
Repository Root: ​http://josm.openstreetmap.de/svn
Revision: 3376

Identification: JOSM/1.5 (3376 en)
Memory Usage: 36 MB / 508 MB (14 MB allocated, but free)
Java version: 1.5.0_22, Sun Microsystems Inc., Java HotSpot(TM) Client VM
Operating system: Windows 2000
Dataset consistency test: No problems found

Plugin: openstreetbugs (21706)
Plugin: remotecontrol (21706)
Plugin: validator (22204)
Plugin: wmsplugin (22286)

org.openstreetmap.josm.io.OsmTransferException: Unexpected format of ID replied by the server. Got .

at org.openstreetmap.josm.io.OsmApi.openChangeset(OsmApi.java:321)
at org.openstreetmap.josm.io.OsmServerWriter.uploadOsm(OsmServerWriter.java:192)
at org.openstreetmap.josm.gui.io.UploadPrimitivesTask.realRun(UploadPrimitivesTask.java:236)
at org.openstreetmap.josm.gui.PleaseWaitRunnable.doRealRun(PleaseWaitRunnable.java:83)
at org.openstreetmap.josm.gui.PleaseWaitRunnable.run(PleaseWaitRunnable.java:129)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

[HB9DTX]

I forgot to mention that I had the problem on java 1.6 and I went back to java 1.5 (remove 1.6, dowloaded 1.5, installing 1.5) and the problem was still there.

[HB9DTX]

I've made the test from another Internet connexion (ADSL), previously it was over GSM and the problem disapeared. I change the ticket to "unreproducable", and will re-open it if the problem appears again.