NPE when the watchlist tries to send emails

2011-06-20 19:00:00,340 [DefaultQuartzScheduler_Worker-2] ERROR c.x.x.p.w.WatchListPlugin      - Exception while running job 
java.lang.NullPointerException: null
        at com.xpn.xwiki.plugin.watchlist.WatchListJob.getSubscribers(WatchListJob.java:208) ~[xwiki-platform-watchlist-api-3.2-SNAPSHOT.jar:na]
        at com.xpn.xwiki.plugin.watchlist.WatchListJob.executeJob(WatchListJob.java:241) ~[xwiki-platform-watchlist-api-3.2-SNAPSHOT.jar:na]
        at com.xpn.xwiki.plugin.scheduler.AbstractJob.execute(AbstractJob.java:75) [xwiki-platform-scheduler-api-3.2-SNAPSHOT.jar:na]
        at org.quartz.core.JobRunShell.run(JobRunShell.java:202) [quartz-1.6.5.jar:1.6.5]
        at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:525) [quartz-1.6.5.jar:1.6.5]
2011-06-20 20:00:00,314 [DefaultQuartzScheduler_Worker-4] ERROR c.x.x.p.w.WatchListPlugin      - Exception while running job 
java.lang.NullPointerException: null
        at com.xpn.xwiki.plugin.watchlist.WatchListJob.getSubscribers(WatchListJob.java:208) ~[xwiki-platform-watchlist-api-3.2-SNAPSHOT.jar:na]
        at com.xpn.xwiki.plugin.watchlist.WatchListJob.executeJob(WatchListJob.java:241) ~[xwiki-platform-watchlist-api-3.2-SNAPSHOT.jar:na]
        at com.xpn.xwiki.plugin.scheduler.AbstractJob.execute(AbstractJob.java:75) [xwiki-platform-scheduler-api-3.2-SNAPSHOT.jar:na]
        at org.quartz.core.JobRunShell.run(JobRunShell.java:202) [quartz-1.6.5.jar:1.6.5]
        at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:525) [quartz-1.6.5.jar:1.6.5]
2011-06-20 21:00:00,414 [DefaultQuartzScheduler_Worker-6] ERROR c.x.x.p.w.WatchListPlugin      - Exception while running job 
java.lang.NullPointerException: null
        at com.xpn.xwiki.plugin.watchlist.WatchListJob.getSubscribers(WatchListJob.java:208) ~[xwiki-platform-watchlist-api-3.2-SNAPSHOT.jar:na]
        at com.xpn.xwiki.plugin.watchlist.WatchListJob.executeJob(WatchListJob.java:241) ~[xwiki-platform-watchlist-api-3.2-SNAPSHOT.jar:na]
        at com.xpn.xwiki.plugin.scheduler.AbstractJob.execute(AbstractJob.java:75) [xwiki-platform-scheduler-api-3.2-SNAPSHOT.jar:na]
        at org.quartz.core.JobRunShell.run(JobRunShell.java:202) [quartz-1.6.5.jar:1.6.5]
        at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:525) [quartz-1.6.5.jar:1.6.5]
2011-06-20 22:00:00,533 [DefaultQuartzScheduler_Worker-8] ERROR c.x.x.p.w.WatchListPlugin      - Exception while running job 
java.lang.NullPointerException: null
        at com.xpn.xwiki.plugin.watchlist.WatchListJob.getSubscribers(WatchListJob.java:208) ~[xwiki-platform-watchlist-api-3.2-SNAPSHOT.jar:na]
        at com.xpn.xwiki.plugin.watchlist.WatchListJob.executeJob(WatchListJob.java:241) ~[xwiki-platform-watchlist-api-3.2-SNAPSHOT.jar:na]
        at com.xpn.xwiki.plugin.scheduler.AbstractJob.execute(AbstractJob.java:75) [xwiki-platform-scheduler-api-3.2-SNAPSHOT.jar:na]
        at org.quartz.core.JobRunShell.run(JobRunShell.java:202) [quartz-1.6.5.jar:1.6.5]
        at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:525) [quartz-1.6.5.jar:1.6.5]
2011-06-20 22:04:03,002 [http://localhost:8080/xwiki/bin/loginsubmit/XWiki/XWikiLogin?j_password=admin&j_username=Admin&] WARN  o.x.v.i.DefaultVelocityEngine  - Deprecated usage of method [com.xpn.xwiki.api.XWiki.parseMessage] in /templates/login.vm@28,33 
2011-06-21 07:39:21,613 [DefaultQuartzScheduler_Worker-9] ERROR c.x.x.p.w.WatchListPlugin      - Failed to send watchlist notification to user [xwiki:Main.WebHome] 
com.xpn.xwiki.XWikiException: Error number 0 in 5: User [xwiki:Main.WebHome] does not exists
        at com.xpn.xwiki.plugin.watchlist.WatchListStore.getWatchListObject(WatchListStore.java:530) ~[xwiki-platform-watchlist-api-3.2-SNAPSHOT.jar:na]
        at com.xpn.xwiki.plugin.watchlist.WatchListStore.getWatchedElements(WatchListStore.java:394) ~[xwiki-platform-watchlist-api-3.2-SNAPSHOT.jar:na]
        at com.xpn.xwiki.plugin.watchlist.WatchListJob.executeJob(WatchListJob.java:256) ~[xwiki-platform-watchlist-api-3.2-SNAPSHOT.jar:na]
        at com.xpn.xwiki.plugin.scheduler.AbstractJob.execute(AbstractJob.java:75) [xwiki-platform-scheduler-api-3.2-SNAPSHOT.jar:na]
        at org.quartz.core.JobRunShell.run(JobRunShell.java:202) [quartz-1.6.5.jar:1.6.5]
        at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:525) [quartz-1.6.5.jar:1.6.5]
2011-06-21 08:00:00,236 [DefaultQuartzScheduler_Worker-1] ERROR c.x.x.p.w.WatchListPlugin      - Exception while running job 
java.lang.NullPointerException: null
        at com.xpn.xwiki.plugin.watchlist.WatchListJob.getSubscribers(WatchListJob.java:208) ~[xwiki-platform-watchlist-api-3.2-SNAPSHOT.jar:na]
        at com.xpn.xwiki.plugin.watchlist.WatchListJob.executeJob(WatchListJob.java:241) ~[xwiki-platform-watchlist-api-3.2-SNAPSHOT.jar:na]
        at com.xpn.xwiki.plugin.scheduler.AbstractJob.execute(AbstractJob.java:75) [xwiki-platform-scheduler-api-3.2-SNAPSHOT.jar:na]
        at org.quartz.core.JobRunShell.run(JobRunShell.java:202) [quartz-1.6.5.jar:1.6.5]
        at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:525) [quartz-1.6.5.jar:1.6.5]