Along with the recent project level TestNG settings I mentioned the other day, Hani commited a few bug fixes to the plugin so I've gone and pushed out a new build to the IntelliJ Plugin Manager - updates include:

Grab it from the plugins website or direct from the IntelliJ Plugin Manager.
Is it possible to add support for running a package? Using JUnit in
IntelliJ, I sometimes run all tests in a certain package by right-clicking
on the package in the project view and choosing "run tests". This does not
seem to work with TestNG currently.
Hi Wim, it's not possible via the project/package manager (great idea
thou...) but you can create a new run profile and select package from the
'Run->Edit Configurations' menu easily enough.
With new version of plugin I received following IDEA exception, when try to
run TestNG tests:
java.lang.NullPointerException at com.intellij.codeInsight.AnnotationUtil.findAnnotation(AnnotationUtil.j ava:73) at com.theoryinpractice.testng.util.TestNGUtil.filterAnnotations(T estNGUtil.java:148) at com.theoryinpractice.testng.TestNGRunnableState.cal culateDependencies(TestNGRunnableState.java:415) at com.theoryinpractice.t estng.TestNGRunnableState.createJavaParameters(TestNGRunnableState.java:245 ) at com.intellij.execution.configurations.JavaCommandLineState.getJavaPar ameters(JavaCommandLineState.java:30)I use IntelliJ IDEA 6.0.1, build #5784. Is there any way to fix this issue? Maybe there are some problem in my IDEA configuration. PS: Thanks for this plugin!
Igor - that exception triggers inside IntelliJ's OpenAPI library so I'm
unable to fix anything directly. Have you tried using the recently
released 6.0.2 release?
Hi all,
Hey Marc - since IDEA 7.0 the TestNG plugin ships with the IDE. You don't
mention what version of IDEA you're using, or what version of the plugin.
Hi Mark,
The plugin should just work under 7.0.3 - does the plugin show as being
installed/enabled in the plugin manager? If you want click the "chat with
mark" link in the upper right corner of the blog and if I'm here we'll see
if we can work out whats wrong...