got error message about Mapillary plugin (development version)

[Polyglot]

What steps will reproduce the problem?

1. I wasn't working in an area where pictures are available. (Arlon in Belgium). I think in semiautomatic mode, but when I went to check it said automatic mode.

What is the expected result?

What happens instead?

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

Repository Root: http://josm.openstreetmap.de/svn
Build-Date: 2015-07-24 01:32:05
Last Changed Author: bastiK
Revision: 8614
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Relative URL: ^/trunk
URL: http://josm.openstreetmap.de/svn/trunk
Last Changed Date: 2015-07-23 12:14:43 +0200 (Thu, 23 Jul 2015)
Last Changed Rev: 8614

Identification: JOSM/1.5 (8614 en) Windows 7 64-Bit
Memory Usage: 1117 MB / 1117 MB (173 MB allocated, but free)
Java version: 1.7.0_40, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Dataset consistency test: No problems found

Plugins:
- AddrInterpolation (31241)
- ImportImagePlugin (31241)
- Mapillary (31395)
- OpeningHoursEditor (31241)
- PicLayer (31241)
- RoadSigns (31241)
- TombPlugin (44)
- alignways (31241)
- buildings_tools (31361)
- commons-imaging (31241)
- contourmerge (1013)
- dataimport (31241)
- easy-routes (UNKNOWN)
- fieldpapers (v0.3.0)
- geochat (31241)
- geotools (31126)
- importvec (31241)
- jna (31126)
- jts (31126)
- livegps (31241)
- log4j (31231)
- mapdust (31241)
- measurement (31289)
- mirrored_download (31294)
- opendata (31241)
- pdfimport (31241)
- photo_geotagging (31241)
- photoadjust (31241)
- public_transport (31241)
- reverter (31241)
- scripting (30710)
- tag2link (31241)
- terracer (31241)
- todo (29154)
- turnrestrictions (31241)
- undelete (31241)
- utilsplugin2 (31241)
- walkingpapers (31241)
- wikipedia (31241)

Last errors/warnings:
- E: Failed to locate image 'presets/crossing.png'
- W: Could not get presets icon presets/crossing.png
- E: Unable to load module icon: images/be24.png
- E: java.io.IOException: Server returned HTTP response code: 503 for URL: https://a.mapillary.com/v2/search/im/or/?client_id=NzNRM2otQkR2SHJzaXJmNmdQWVQ0dzo1YTA2NmNlODhlNWMwOTBm&min_lon=4.372135&max_lat=50.833866&min_lat=50.808149&max_lon=4.413683&page=6&limit=20
- E: java.util.ConcurrentModificationException

java.util.ConcurrentModificationException
	at java.util.ArrayList$Itr.checkForComodification(Unknown Source)
	at java.util.ArrayList$Itr.next(Unknown Source)
	at org.openstreetmap.josm.plugins.mapillary.downloads.MapillaryDownloader.completeView(MapillaryDownloader.java:65)
	at org.openstreetmap.josm.plugins.mapillary.mode.AbstractMode.zoomChanged(AbstractMode.java:70)
	at org.openstreetmap.josm.plugins.mapillary.mode.AbstractMode$1.run(AbstractMode.java:79)

From command line:

n)
INFO: GET ?client_id=NzNRM2otQkR2SHJzaXJmNmdQWVQ0dzo1YTA2NmNlODhlNWMwOTBm&min_lo
n=5.799579&max_lat=49.618812&min_lat=49.608408&max_lon=5.815968 (Mapillary plugi
n)
INFO: GET ?client_id=NzNRM2otQkR2SHJzaXJmNmdQWVQ0dzo1YTA2NmNlODhlNWMwOTBm&min_lo
n=5.803715&max_lat=49.616833&min_lat=49.611631&max_lon=5.811910 (Mapillary plugi
n)
INFO: GET ?client_id=NzNRM2otQkR2SHJzaXJmNmdQWVQ0dzo1YTA2NmNlODhlNWMwOTBm&min_lo
n=5.806883&max_lat=49.614752&min_lat=49.612151&max_lon=5.810980 (Mapillary plugi
n)
INFO: GET ?client_id=NzNRM2otQkR2SHJzaXJmNmdQWVQ0dzo1YTA2NmNlODhlNWMwOTBm&min_lo
n=5.805566&max_lat=49.615667&min_lat=49.611988&max_lon=5.811360 (Mapillary plugi
n)
INFO: GET ?client_id=NzNRM2otQkR2SHJzaXJmNmdQWVQ0dzo1YTA2NmNlODhlNWMwOTBm&min_lo
n=5.806110&max_lat=49.615346&min_lat=49.612745&max_lon=5.810207 (Mapillary plugi
n)
INFO: GET ?client_id=NzNRM2otQkR2SHJzaXJmNmdQWVQ0dzo1YTA2NmNlODhlNWMwOTBm&min_lo
n=5.805414&max_lat=49.615827&min_lat=49.612149&max_lon=5.811208 (Mapillary plugi
n)
[INFO] CacheEventQueue - Cache event queue created: CacheEventQueue [listenerId=
-1060296655, cacheName=mapillary]
INFO: GET ?client_id=NzNRM2otQkR2SHJzaXJmNmdQWVQ0dzo1YTA2NmNlODhlNWMwOTBm&min_lo
n=5.808455&max_lat=49.615241&min_lat=49.613940&max_lon=5.810504 (Mapillary plugi
n)
INFO: GET ?client_id=NzNRM2otQkR2SHJzaXJmNmdQWVQ0dzo1YTA2NmNlODhlNWMwOTBm&min_lo
n=5.804469&max_lat=49.616767&min_lat=49.611565&max_lon=5.812664 (Mapillary plugi
n)
ERROR: java.util.ConcurrentModificationExceptionINFO: GET ?client_id=NzNRM2otQkR
2SHJzaXJmNmdQWVQ0dzo1YTA2NmNlODhlNWMwOTBm&min_lon=5.808179&max_lat=49.613929&min
_lat=49.612090&max_lon=5.811076 (Mapillary plugin)

java.util.ConcurrentModificationException

at java.util.ArrayList$Itr.checkForComodification(Unknown Source)
at java.util.ArrayList$Itr.next(Unknown Source)
at org.openstreetmap.josm.plugins.mapillary.downloads.MapillaryDownloade

r.completeView(MapillaryDownloader.java:65)

at org.openstreetmap.josm.plugins.mapillary.mode.AbstractMode.zoomChange

d(AbstractMode.java:70)

at org.openstreetmap.josm.plugins.mapillary.mode.AbstractMode$1.run(Abst

ractMode.java:79)