Hi , I am getting following error while deploying sources in solaris env, This is running fine in nt. Wht could be the prob? Thanks Ramu compilation of Log.jsp failed: weblogic.utils.ParsingException: nested IOException: java.io.IOException: cannot resolve 'TagUri' into a valid tag library at java.lang.Throwable.fillInStackTrace(Native Method) at java.lang.Throwable.fillInStackTrace(Compiled Code) at java.lang.Throwable.<init>(Compiled Code) at java.lang.Exception.<init>(Compiled Code) at javax.servlet.ServletException.<init>(ServletException.java:132) at weblogic.servlet.jsp.JspStub.prepareServlet(JspStub.java:182) at weblogic.servlet.internal.ServletStubImpl.getServlet(Compiled Code) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(Compiled Code) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(Compiled Code) at weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled Code) at weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled Code) at weblogic.servlet.internal.ServletContextManager.invokeServlet(Compiled Code) at weblogic.socket.MuxableSocketHTTP.invokeServlet(Compiled Code) at weblogic.socket.MuxableSocketHTTP.execute(Compiled Code) at weblogic.kernel.ExecuteThread.run(Compiled Code) Thu Sep 06 06:26:32 GMT-08:00 2001:<E> <ServletContext-fotrd> root cause of ServletException weblogic.utils.ParsingException: nested IOException: java.io.IOException: cannot resolve 'TagUri' into a valid tag library at java.lang.Throwable.fillInStackTrace(Native Method) at java.lang.Throwable.fillInStackTrace(Compiled Code) at java.lang.Throwable.<init>(Compiled Code) at java.lang.Exception.<init>(Compiled Code) at weblogic.utils.ParsingException.<init>(ParsingException.java:10) at weblogic.servlet.jsp.JspLexer.parse(Compiled Code) at weblogic.servlet.jsp.JspParser.doit(Compiled Code) at weblogic.servlet.jsp.JspParser.parse(JspParser.java:109) at weblogic.servlet.jsp.Jsp2Java.outputs(Jsp2Java.java:97) at weblogic.utils.compiler.CodeGenerator.generate(Compiled Code) at weblogic.servlet.jsp.JspStub.compilePage(Compiled Code) at weblogic.servlet.jsp.JspStub.prepareServlet(JspStub.java:174) at weblogic.servlet.internal.ServletStubImpl.getServlet(Compiled Code) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(Compiled Code) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(Compiled Code) at weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled Code) at weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled Code) at weblogic.servlet.internal.ServletContextManager.invokeServlet(Compiled Code) at weblogic.socket.MuxableSocketHTTP.invokeServlet(Compiled Code) at weblogic.socket.MuxableSocketHTTP.execute(Compiled Code) at weblogic.kernel.ExecuteThread.run(Compiled Code)