From: David Tann on
Hi there,

I have a problem with my webMathematica. Can anyone tell me what is the
cause of this problem? Can anyone guide me through email to solve this
problem?

HTTP Status 500 -
________________________________________
type Exception report

message

description The server encountered an internal error () that prevented it
from fulfilling this request.

exception
javax.servlet.ServletException: A Kernel cannot be activated.

org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextI
mpl.java:825)

org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImp
l.java:758)
org.apache.jsp.Examples.Plot_jsp._jspService(Plot_jsp.java:111)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:3
24)

org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

root cause
javax.servlet.jsp.JspTagException: A Kernel cannot be activated.
com.wolfram.webmathematica.tags.AllocateKernel.doStartTag(Unknown
Source)

org.apache.jsp.Examples.Plot_jsp._jspx_meth_msp_allocateKernel_0(Plot_jsp.ja
va:128)
org.apache.jsp.Examples.Plot_jsp._jspService(Plot_jsp.java:91)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:3
24)

org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

note The full stack trace of the root cause is available in the Apache
Tomcat/5.0.28 logs.

Thanks,
David

From: Steven.Shippee on
This problem occurs because there is an error processing the ASP
(Active Server Page) script, and the "Friendly HTTP error messages" are
enabled in Internet Explorer (you are using IE, aren't you?) which
suppresses the error details.

I would suggest that you start by launching Internet Explorer, turn off
the "Friendly HTTP error messages" by choosing tools - internet options
- advanced. After doing this the full error messages will be displayed
in more detail thereby giving you more of a sense of what is wrong and
what logs to review as part of your troubleshooting efforts.

Hope this helps.

Steven Shippee
slshippee(a)comcast.net


On Dec 14, 3:10 am, "David Tann" <d...(a)linearsoft.net> wrote:
> Hi there,
>
> I have a problem with my webMathematica. Can anyone tell me what is the
> cause of this problem? Can anyone guide me through email to solve this
> problem?
>
> HTTP Status 500 -
> ________________________________________
> type Exception report
>
> message
>
> description The server encountered an internal error () that prevented it
> from fulfilling this request.
>
> exception
> javax.servlet.ServletException: A Kernel cannot be activated.
>
> org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContext�I
> mpl.java:825)
>
> org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextIm�p
> l.java:758)
> org.apache.jsp.Examples.Plot_jsp._jspService(Plot_jsp.java:111)
> org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
> javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
>
> org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:�3
> 24)
>
> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
> org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
> javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
>
> root cause
> javax.servlet.jsp.JspTagException: A Kernel cannot be activated.
> com.wolfram.webmathematica.tags.AllocateKernel.doStartTag(Unknown
> Source)
>
> org.apache.jsp.Examples.Plot_jsp._jspx_meth_msp_allocateKernel_0(Plot_jsp.j�a
> va:128)
> org.apache.jsp.Examples.Plot_jsp._jspService(Plot_jsp.java:91)
> org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
> javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
>
> org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:�3
> 24)
>
> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
> org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
> javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
>
> note The full stack trace of the root cause is available in the Apache
> Tomcat/5.0.28 logs.
>
> Thanks,
> David