Crashes randomly while using traces2server

[anonymous]

What steps will reproduce the problem?

1. Install Plugin Tracer2
2. Install Tracer2Server Software and start it.
3. Press "T" (using Plugin in JOSM)
4. Klick inside of a house (Germany NRW)
5. Sometimes it just crashes...

What is the expected result?

No crash...

What happens instead?

Josm asks me to disable the plugin or update it. But that doesnt solve the problem.

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

Revision: 7777
Repository Root: http://josm.openstreetmap.de/svn
Relative URL: ^/trunk
Last Changed Author: Don-vip
Last Changed Date: 2014-12-09 18:14:49 +0100 (Tue, 09 Dec 2014)
Build-Date: 2014-12-09 17:17:36
URL: http://josm.openstreetmap.de/svn/trunk
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last Changed Rev: 7777

Identification: JOSM/1.5 (7777 de) Windows 7 32-Bit
Memory Usage: 237 MB / 989 MB (64 MB allocated, but free)
Java version: 1.8.0_25, Oracle Corporation, Java HotSpot(TM) Client VM
Dataset consistency test: No problems found

Plugins:
- FixAddresses (30737)
- HouseNumberTaggingTool (30762)
- OpeningHoursEditor (30737)
- PicLayer (30762)
- Tracer2 (30695)
- buildings_tools (30762)
- contourmerge (1012)
- download_along (30762)
- measurement (30737)
- merge-overlap (30784)
- mirrored_download (30762)
- notes (v0.9.5)
- terracer (30872)
- turnrestrictions (30762)
- utilsplugin2 (30863)

Last errors/warnings:
- E: Fehler beim Laden des Bildes 'http://www.country-linedance.de/daten/image/20.png'
- W: Could not get presets icon http://www.country-linedance.de/daten/image/20.png
- E: Fehler beim Laden des Bildes 'null'
- E: java.lang.IllegalArgumentException: Primitive to delete must be in a dataset
- E: java.lang.IllegalArgumentException: Primitive to delete must be in a dataset

java.lang.IllegalArgumentException: Primitive to delete must be in a dataset
	at org.openstreetmap.josm.command.DeleteCommand.checkConsistency(DeleteCommand.java:115)
	at org.openstreetmap.josm.command.DeleteCommand.<init>(DeleteCommand.java:66)
	at org.openstreetmap.josm.command.DeleteCommand.<init>(DeleteCommand.java:76)
	at org.openstreetmap.josm.plugins.tracer2.ConnectWays.mergeNodes(ConnectWays.java:292)
	at org.openstreetmap.josm.plugins.tracer2.ConnectWays.connectTo(ConnectWays.java:251)
	at org.openstreetmap.josm.plugins.tracer2.ConnectWays.connect(ConnectWays.java:195)
	at org.openstreetmap.josm.plugins.tracer2.TracerAction.traceSync(TracerAction.java:330)
	at org.openstreetmap.josm.plugins.tracer2.TracerAction.access$000(TracerAction.java:62)
	at org.openstreetmap.josm.plugins.tracer2.TracerAction$1.realRun(TracerAction.java:174)
	at org.openstreetmap.josm.gui.PleaseWaitRunnable.doRealRun(PleaseWaitRunnable.java:93)
	at org.openstreetmap.josm.gui.PleaseWaitRunnable.run(PleaseWaitRunnable.java:161)
	at java.lang.Thread.run(Unknown Source)

[anonymous]

Well, it seems that it just crashes, when I am trying to get the lines form the building just NEXT to my former created building (wall to wall). When I click on the building a few meters away... it doesn't crash.
It seems that it cant draw the new line on an existing building-line (combining the lines with the nodes)...

[Don-vip]

Closed as duplicate of #10834.