Upgrading to 2818 hangs on processing plugins

[anonymous]

Waited 5+ minutes for something to happen, eventually killed the process, tried to restart same result.

End up deleting .josm directory, which causes a Null Pointer Exception:

java.lang.NullPointerException
	at org.openstreetmap.josm.plugins.ReadLocalPluginInformationTask.scanSiteCacheFiles(ReadLocalPluginInformationTask.java:78)
	at org.openstreetmap.josm.plugins.ReadLocalPluginInformationTask.scanLocalPluginRepository(ReadLocalPluginInformationTask.java:130)
	at org.openstreetmap.josm.plugins.ReadLocalPluginInformationTask.realRun(ReadLocalPluginInformationTask.java:186)
	at org.openstreetmap.josm.gui.PleaseWaitRunnable.doRealRun(PleaseWaitRunnable.java:81)
	at org.openstreetmap.josm.gui.PleaseWaitRunnable.run(PleaseWaitRunnable.java:123)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:619)
java.lang.NullPointerException
	at org.openstreetmap.josm.plugins.ReadLocalPluginInformationTask.scanSiteCacheFiles(ReadLocalPluginInformationTask.java:78)
	at org.openstreetmap.josm.plugins.ReadLocalPluginInformationTask.scanLocalPluginRepository(ReadLocalPluginInformationTask.java:130)
	at org.openstreetmap.josm.plugins.ReadLocalPluginInformationTask.realRun(ReadLocalPluginInformationTask.java:186)
	at org.openstreetmap.josm.gui.PleaseWaitRunnable.doRealRun(PleaseWaitRunnable.java:81)
	at org.openstreetmap.josm.gui.PleaseWaitRunnable.run(PleaseWaitRunnable.java:123)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:619)

[anonymous]

Even after removing the .josm directory, if you install new plugins JOSM hangs on start saying processing plugins...

[delta_foxtrot2]

Thought I was logged in, and wasn't...

[Gubaer]

Fixed in r2819. At least the NPE.

Couldn't reproduce JOSM hanging on startup, though.