Very strange. It worked the entire day after I re-imported the Jar files into the lib directory like I indicated.
The next morning I get the same error again as before. I am not working on java charts. I configured the one chart and have left it alone. I am working on another part of the xpage.
03/01/2013 08:34:53 AM HTTP JVM: java.lang.NoClassDefFoundError: org.openntf.javacharts.Common
03/01/2013 08:34:53 AM HTTP JVM: com.ibm.xsp.webapp.FacesServlet$ExtendedServletException: java.lang.IllegalStateException: Can't get a Writer while an OutputStream is already in use
I tried to rebuild project and I tried to clean the project. No luck.
So I remove and re-import jar files, like I did yesterday, add them to the library and it starts working again.
Our server wasn't rebooted last night. It is zlinux (virtual) 8.53 UP1 FP2
Let me know if there is anything you want me to try and examine.