[opencms-dev] Strange CmsException: 28 Error while launching template class

[Ulrich Rueth]

Hi,
my jsp template which was working perfectly up to now all of a sudden
produces a strange error without me having modified anything! The exception
is (first lines):

[jsptemplate] ??? com.opencms.core.CmsException: 0 Unknown exception.
Detailed error: [CmsJspTemplate] Error while reading JSP
/system/modules/info.rueth.opencms.private/jsptemplates/article.jsp
com.opencms.core.CmsException: 28 Error while launching template class.
Detailed error: Error in CmsJspLoader.loadTemplate() while loading
/system/modules/info.rueth.opencms.private/jsptemplates/article.jsp
javax.servlet.ServletException: Resource loader error in file
'/system/modules/info.rueth.opencms.private/jsptemplates/article.jsp' Root
cause: org.apache.jasper.JasperException at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:2
48) at
...

Anybody any ideas?
Regards,
Ulrich