I configured one of my job to use the Task Scanner Plugin. It was working fine.
Today I upgraded Hudson and the plugin to their latest version and I have a issue.
1) If I create a new job and configure it to use the plugin, it works fine.
2) For old jobs, the "Open Tasks Trend" image does not work anymore. When I try to load the image I get a java.lang.NullPointerException in hudson.plugins.analysis.graph.CategoryBuildResultGraph.createSeriesPerBuild(CategoryBuildResultGraph.java:154)