[Talk-us] Possible destructive bug in JOSM build 2417 - need someone to duplicate

[Chris Hunter]

My apologies if this has already been reported to the dev mailing list, but
I've been running up against a critical/showstopper bug in JOSM 2417 for the
past few days.

Can someone please try and duplicate this "precondition failed" bug:

http://josm.openstreetmap.de/ticket/3884

Here is the chain of events that seems to cause the most frequent problems:

1. Download and edit a small area (1 square mile or so).
2. Move along a way that was just edited, and download another small area.
3. Upload changes, but leave the changeset open. - Error may occur at this
point.
4. Download and edit some more small areas along the same way.
5. Attempt to upload the new changes using the open changeset - Error *WILL*
occur at this point.

Depending on if the validator plugin is installed or not, you may also get a
slew of warning messages about duplicate nodes.

For the record, I've already tried wiping my \program files\JOSM and
\application data\JOSM folders, but the problem persists.  I've also noticed
that the color scheme reverts from "Windows" to "Metal" every other time
JOSM runs.
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