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Build: NetBeans IDE 6.9.1 (Build 201011082200) VM: Java HotSpot(TM) 64-Bit Server VM, 16.3-b01, Java(TM) SE Runtime Environment, 1.6.0_20-b02 OS: Linux User Comments: GUEST: i want to get project properties sinobra: Opening a project Stacktrace: java.lang.NullPointerException at org.netbeans.modules.ruby.railsprojects.RailsProjectUtil.getRailsVersion(RailsProjectUtil.java:165) at org.netbeans.modules.ruby.railsprojects.plugins.PluginAction.enable(PluginAction.java:120) at org.openide.util.actions.NodeAction$DelegateAction.resultChanged(NodeAction.java:615) at org.openide.util.actions.NodeAction$DelegateAction.<init>(NodeAction.java:560) at org.openide.util.actions.NodeAction.createContextAwareInstance(NodeAction.java:357) at org.openide.util.Utilities.actionsToPopup(Utilities.java:2723)
Created attachment 102991 [details] stacktrace
Same problem here (Gentoo and Ubuntu, bot on AMD64, but not on my Laptop [Arch, i686]). It happens when you try to right click on a project in the project view. Note that Netbeans 6.8 works fine.
In my case the issue was due to an invalid Ruby platform specified for the project. Configuring the Ruby platform from File -> Project Properties fixed the problem.