After installing IBM Notes 9.0.1FP4 I have been unable to launch Notes from my Eclipse workspace when doing RCP development (i.e. plugin development) for Notes. I finally decided to solve it. The stacktrace is like the one below:
2015/07/20 08:16:42.280 SEVERE CLPDN0016E: Error starting RCPApplication com.ibm.rcp.personality.framework.RCPApplication ::class.method=com.ibm.rcp.personality.framework.internal.RCPApplication.run() ::thread=Thread-1 ::loggername=com.ibm.rcp.personality.framework.internal java.lang.NoSuchFieldError: isWindows at com.ibm.rcp.platform.personality.DefaultWorkbenchWindowAdvisor.createLaunchChevron(DefaultWorkbenchWindowAdvisor.java:2229) at com.ibm.rcp.platform.personality.DefaultWorkbenchWindowAdvisor.createShortcutBarItems(DefaultWorkbenchWindowAdvisor.java:591) at com.ibm.rcp.platform.personality.DefaultWorkbenchWindowAdvisor.createWindowContents(DefaultWorkbenchWindowAdvisor.java:733)
The issue turned out to be due to duplicate similar named plugins from the target platform with different versions. For instance I had the com.ibm.common.services.icalendar plugin in both version 126.96.36.19931022-0932 and in version 188.8.131.5250610-1521. Manually running through the plugins included in the target platform and excluding the older versions solved the issue. There must have been a problem deleting the older versions when upgrading my Notes client but in any case it’s solved now.