I have attached a project that exhibits this bug.

The exception is as follows and I have verified that the null object is the build file.

I added several lines for debugging so the line number in the stack trace may be off. I tried to remember the original. Anyhow, one line I added was:

System.out.println("buildFile: "+getProject().getBuildFile());

it printed null.

java.lang.NullPointerException: null
at org.gradle.api.plugins.jetty.JettyRun$1.filesChanged(JettyRun.java:210)
at org.mortbay.util.Scanner.reportBulkChanges(Scanner.java:486)
at org.mortbay.util.Scanner.reportDifferences(Scanner.java:352)
at org.mortbay.util.Scanner.scan(Scanner.java:280)
at org.mortbay.util.Scanner$1.run(Scanner.java:232)
at java.util.TimerThread.mainLoop(Timer.java:512)
at java.util.TimerThread.run(Timer.java:462)