[LON-CAPA-users] Never found end tag for < problem> current string

[Mills, Douglas G]

HI All,

I finally realized the source of these "Never found end tag for <problem>"
errors. I have some JavaScript directly before the closing problem tag and
it does some searching for some strings including "<". Apparently some of
the (jpre-?)processing in Lon-Capa wraps a //<![CDATA[       ]]> around this
part of the code I assume to keep a parser at some point from choking on the
special characters there. However, in some instances the closing ]]> tags
occur AFTER the </problem> tag so that the parser does not find that tag and
throws a bomb.  My solution I'm trying is to premptively insert the

<![CDATA[  .......   ]]> tags into my JavaScript (commented out by //) in
places that should make the parser happy without needing to insert it's own
code... I'm hoping.

Doug



On 10/16/12 9:07 AM, "Mills, Douglas G" <dmills at illinois.edu> wrote:

> Thank you Stefan. Great suggestion on the external text viewer -- I'll give
> that a try. There is nothing imported on these. They do reference an
> external stylesheet.  I'm hypothesizing that the problem(s) may lie
> somewhere in a branch of the code considering that for the number of
> students using these (close to 2,400 every week) the frequency of bombs is
> very low, so maybe occurring only under certain conditions. And maybe that
> would account for why the authoring environment doesn't complain(?)  Anyway,
> I'll give your suggesting a try. Thank you!
> 
> Doug
> 
> 
> On 10/15/12 5:40 PM, "st.bisitz at ostfalia.de" <st.bisitz at ostfalia.de> wrote:
> 
>> Hi,
>> 
>> I wonder why there are no complains in the Construction Space. Anyway, you
>> could try an external text viewer with syntax highlighting (e.g. for XML) to
>> view the source code of the problem. This might help to easily figure out
>> missbalanced tags.
>> 
>> Are there any parts, libraries, etc. imported?
>> 
>> Stefan Bisitz
>> 
>> 
>> On 2012-10-15 22:41:38, REX ABERT wrote:
>>> In my own experience, it is usually not the missing </problem> tag, as you
>>> have observed, but more likely mismatched quotation marks in strings, or a
>>> mismatched curly brace.
>>> 
>>> Rex
>>> 
>>> ________________________________________
>>> From: lon-capa-users-bounces at mail.lon-capa.org
>>> [lon-capa-users-bounces at mail.lon-capa.org] On Behalf Of Mills, Douglas G
>>> [dmills at illinois.edu]
>>> Sent: Monday, October 15, 2012 11:48 AM
>>> To: Discussion list for LON-CAPA users
>>> Subject: [LON-CAPA-users] Never found end tag for <problem> current string
>>> 
>>> HI All,
>>> 
>>> I¹ve been getting these errors from some of our resources. I know that¹s not
>>> actually the problem since at the end of the ³current string² is the
>>> </problem> endtag.  Along with these there are typically one or more
>>> messages
>>> along the lines of
>>> 
>>> ========
>>> Endredirection was called before a startredirection, perhaps you have
>>> unbalanced tags. Some debugging
>>> 
information:Apache::structuretags:/home/httpd/lib/perl//Apache/structuretags>>>
.
>>> pm:1199
>>> This error occurred while processing part
>>> The error occurred on host uiucaccess4
>>> 
>>> This error occurred on machine uiucaccess4
>>> ========
>>> 
>>> The code for these problems is quite long and complex and I despair of
>>> tracking down any unbalanced tags without any further clues. Can anyone
>>> point
>>> me in the direction of understanding, for example, what the ³Some debugging
>>> information² information refers to and how I might be able to tap into that
>>> to figure out what¹s going on?  Any other tips or advice on things like
>>> this?
>>> I¹m not getting any errors in the authoring space itself.
>>> 
>>> Doug
>>> 
>>> Douglas Mills
>>> Director of Instructional Technologies
>>> Department of Chemistry
>>> University of Illinois
>>> dmills at illinois.edu
>>> (217) 244-5739
>>> 
>>> 
>>> _______________________________________________
>>> LON-CAPA-users mailing list
>>> LON-CAPA-users at mail.lon-capa.org
>>> http://mail.lon-capa.org/mailman/listinfo/lon-capa-users
>> _______________________________________________
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> 
> 
> Doug
> 
> Douglas Mills
> Director of Instructional Technologies
> Department of Chemistry
> University of Illinois
> dmills at illinois.edu
> (217) 244-5739 
> 
> 
> _______________________________________________
> LON-CAPA-users mailing list
> LON-CAPA-users at mail.lon-capa.org
> http://mail.lon-capa.org/mailman/listinfo/lon-capa-users


Doug

Douglas Mills
Director of Instructional Technologies
Department of Chemistry
University of Illinois
dmills at illinois.edu
(217) 244-5739