"Saving a File" triggered this bug

[anonymous]

What steps will reproduce the problem?

What is the expected result?

What happens instead?

Please provide any additional information below. Attach a screenshot if possible.

URL:http://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2017-01-30 23:31:53 +0100 (Mon, 30 Jan 2017)
Build-Date:2017-01-31 02:34:40
Revision:11515
Relative:URL: ^/trunk

Identification: JOSM/1.5 (11515 en) Linux Debian GNU/Linux 9.0 (stretch)
Memory Usage: 1346 MB / 2604 MB (667 MB allocated, but free)
Java version: 1.8.0_121-8u121-b13-2-b13, Oracle Corporation, OpenJDK 64-Bit Server VM
Screen: :0.0 1920x1080
Maximum Screen Size: 1920x1080
Java package: openjdk-8-jre:amd64-8u121-b13-2
Java ATK Wrapper package: libatk-wrapper-java:all-0.33.3-13
Dataset consistency test: No problems found

Plugins:
+ apache-commons (32994)
+ apache-http (32699)
+ buildings_tools (33004)
+ geochat (33088)
+ pbf (33004)
+ photo_geotagging (33088)
+ reltoolbox (33088)
+ reverter (33088)
+ utilsplugin2 (33124)

Map paint styles:
- https://github.com/hotosm/HDM-JOSM-style/archive/master.zip
- https://josm.openstreetmap.de/josmfile?page=Styles/Ph_Typhoon&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/sac_scale&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/ShowID&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Coloured_Streets&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/LayerChecker&zip=1

Last errors/warnings:
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- E: Handled by bug report queue: java.nio.file.InvalidPathException: Malformed input or input contains unmappable characters: ${HOME}/gpx/search?type=operator&value=Vogelsberger H��henclub
- E: Handled by bug report queue: java.nio.file.InvalidPathException: Malformed input or input contains unmappable characters: ${HOME}/gpx/search?type=operator&value=Vogelsberger H��henclub


=== REPORTED CRASH DATA ===
BugReportExceptionHandler#handleException:
No data collected.

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: Basic L&F File Loading Thread (3173)
java.nio.file.InvalidPathException: Malformed input or input contains unmappable characters: /home/boris/gpx/search?type=operator&value=Vogelsberger H��henclub
	at sun.nio.fs.UnixPath.encode(UnixPath.java:147)
	at sun.nio.fs.UnixPath.<init>(UnixPath.java:71)
	at sun.nio.fs.UnixFileSystem.getPath(UnixFileSystem.java:281)
	at java.nio.file.Paths.get(Paths.java:84)
	at sun.awt.shell.ShellFolder.getShellFolder(ShellFolder.java:247)
	at javax.swing.filechooser.FileSystemView.getFiles(FileSystemView.java:490)
	at javax.swing.plaf.basic.BasicDirectoryModel$LoadFilesThread.run0(BasicDirectoryModel.java:239)
	at javax.swing.plaf.basic.BasicDirectoryModel$LoadFilesThread.run(BasicDirectoryModel.java:228)