[Pkg-osm-maint] Bug#683186: Bug#683186: josm: Exception when merging multiple layers

[Timo Juhani Lindfors]

Hermann Schwarting <bugs.debian.org at knackich.de> writes:
> * In the layer pane I selected all data layers using Shift-click
> * I clicked on the merge layer button
> * A dialog came up to select the target layer. I selected layer 1 and 
>   pressed Ok
> * The expected result would be that all selected layers are merged 
>   into the one selected in the popup dialog
> * Instead an error window comes up with this exception stack trace:

I can reproduce the backtrace, here's a screencast:

http://lindi.iki.fi/lindi/screencast/josm-merge-layer-backtrace1.ogv