[opencms-dev] Requested datablock "time" not found

[greg opencms]

Still in intially testing of OpenCms,  I often come to the point of logging 
in and being presented with

"HTTP 404 . . . the requested resource (/system/workplace/action/index.html) 
is not available"

by Tomcat.  From this point, I am unable to use OpenCms (though some other 
users still can!) until I re-start OpenCms with Tomcat's "Manager" 
application.  This event results from several different scenarios with no 
pattern yet apparent.

Looking in opencms.log, I find the following "opencms-critical" message 
recorded right before my last failed attempt to login:

[30.03.2004 14:07:10] <opencms_critical> [CmsXmlWpTemplateFile] Requested 
datablock  "time" not found in 
/system/workplace/administration/project/newproject/administration_content_projectnew! 
RequestUri is 
/system/workplace/administration/project/newproject/index.html.

On this occassion, my last seemingly succesful action was creating a new 
project and then logging out.  (On other occasions, my successful action has 
been publishing a project, and then logging out.)

The next line in opencms.log is

[30.03.2004 14:08:26] <opencms_info> [CmsLogin] Login user GregsTestUserB

which is the point at which I am presented with the HTTP 404 message above.

Having found XML parser jar replacement as a suggested solution to other 
pages not being available (and resulting in a HTTP 404 message), I have 
tried that.  Since this problem started, I have tried to fix it by removing 
the xercesImpl.jar and xmlParserAPIs.jar that were included in the 
common/endorsed directory of our Tomcat 4.1.24 installation and putting the 
xerces-1_4_4.jar that came with our OpenCms 5.0 installation in their place. 
  No apparent difference in behaviour.

Could anyone please suggest a way to prevent this error so I can use 
OpenCms?

Thanks in advance,

Greg.

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