Plugin tracer2 crashes when

[anonymous]

What steps will reproduce the problem?

1. Use the plugin tracer2
2. Use nrw alk as data source
3. sometimes (when you try to draw the outline of the building with the plugin) the plugin crashes. At this time a non existent outline in osm should be drawn which borders to an existent osm outline/building.

What is the expected result?

The outline should be drawn.

What happens instead?

The plugin crashes.

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

Repository Root: http://josm.openstreetmap.de/svn
Build-Date: 2014-12-19 15:24:12
Last Changed Author: Don-vip
Revision: 7835
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Relative URL: ^/trunk
URL: http://josm.openstreetmap.de/svn/trunk
Last Changed Date: 2014-12-19 16:15:43 +0100 (Fri, 19 Dec 2014)
Last Changed Rev: 7835

Identification: JOSM/1.5 (7835 de) Windows 7 64-Bit
Memory Usage: 1108 MB / 4444 MB (411 MB allocated, but free)
Java version: 1.7.0_55, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Dataset consistency test: No problems found

Plugins:
- Create_grid_of_ways (30762)
- DirectUpload (30737)
- ElevationProfile (30856)
- FixAddresses (30737)
- HouseNumberTaggingTool (30762)
- OpeningHoursEditor (30737)
- PicLayer (30762)
- RoadSigns (30788)
- SimplifyArea (30791)
- Tracer2 (30695)
- alignways (30695)
- buildings_tools (30762)
- colorscheme (30737)
- conflation (0.1.7)
- contourmerge (1012)
- editgpx (30737)
- geotools (30762)
- imagery_offset_db (30808)
- jts (30762)
- mapdust (30738)
- measurement (30737)
- merge-overlap (30784)
- mirrored_download (30762)
- namemanager (30737)
- notes (v0.9.5)
- public_transport (30762)
- reltoolbox (30841)
- reverter (30737)
- routes (30762)
- tageditor (30738)
- terracer (30737)
- turnlanes (30737)
- turnrestrictions (30762)
- undelete (30762)
- utilsplugin2 (30863)
- waydownloader (30762)

Last errors/warnings:
- 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)

[Don-vip]

Closed as duplicate of #10834.