1) When we tried to browse the Library with "images" display mode, some of the problems may not show up in images mode. Instead, it show up with the raw TeX, something like:
\displaystyle{ \int_{1}^{5} \left(2 x^{-2} - 3\right) \, dx} =
At the bottom part of the page, there are some warning messages:
*******************************************************************************************
WeBWorK Warnings
WeBWorK has encountered warnings while processing your request. If this occured when viewing a problem, it was likely caused by an error or ambiguity in that problem. Otherwise, it may indicate a problem with the WeBWorK system itself. If you are a student, report these warnings to your professor to have them corrected. If you are a professor, please consult the warning output below for more information.
Warning messages
cd /opt/webwork/webwork2/tmp/ImageGenerator.gctVDL8k && /bin/mv /opt/webwork/webwork2/tmp/ImageGenerator.gctVDL8k/equation1.png /opt/webwork/webwork2/htdocs/tmp/equations/49/5a96f400987fb7f948cc298dc49f6c1.png returned non-zero status 256: Bad file descriptor at /opt/webwork/pg/lib/WeBWorK/PG/ImageGenerator.pm line 403.cd /opt/webwork/webwork2/tmp/ImageGenerator.aqx2sQ42 && /bin/mv /opt/webwork/webwork2/tmp/ImageGenerator.aqx2sQ42/equation1.png /opt/webwork/webwork2/htdocs/tmp/equations/bc/8da2b0b73c8d926077f130e25481ed1.png returned non-zero status 256: Bad file descriptor at /opt/webwork/pg/lib/WeBWorK/PG/ImageGenerator.pm line 403.cd /opt/webwork/webwork2/tmp/ImageGenerator.zkk7tWXN && /bin/mv /opt/webwork/webwork2/tmp/ImageGenerator.zkk7tWXN/equation1.png /opt/webwork/webwork2/htdocs/tmp/equations/db/60f1fb09335135526ebc886a0158911.png returned non-zero status 256: Bad file descriptor at /opt/webwork/pg/lib/WeBWorK/PG/ImageGenerator.pm line 403.cd /opt/webwork/webwork2/tmp/ImageGenerator.b3sIqokr && /bin/mv /opt/webwork/webwork2/tmp/ImageGenerator.b3sIqokr/equation1.png /opt/webwork/webwork2/htdocs/tmp/equations/63/92e93f5c26c1cbbd388ce6b88828111.png returned non-zero status 256: Bad file descriptor at /opt/webwork/pg/lib/WeBWorK/PG/ImageGenerator.pm line 403.cd /opt/webwork/webwork2/tmp/ImageGenerator.TUoIDxHg && /bin/mv /opt/webwork/webwork2/tmp/ImageGenerator.TUoIDxHg/equation1.png /opt/webwork/webwork2/htdocs/tmp/equations/c4/3669d431f212872752ce456ccbf1361.png returned non-zero status 256: Bad file descriptor at /opt/webwork/pg/lib/WeBWorK/PG/ImageGenerator.pm line 403.
Request information
| Time | Tue Jan 25 11:05:50 2011 |
| Method | POST |
| URI | /webwork2/math132spring2011/instructor/setmaker/ |
Page generated at 01/25/2011 at 11:05am CST
**********************************************************************************************
What could be the problem? How can we fix it?
2) We also have a problem with the hardcopy download:
When we tried to download a hardcopy of a homework set, we will get the following error message:
*******************************************************************************************
1 error occured while generating hardcopy:
- [edit] Errors encountered while processing snippet 'defaultHeader' for set 'test2' and user 'admin'. This snippet has been omitted from the hardcopy. Error text:
Failed to read the problem source file.
A hardcopy file was generated, but it may not be complete or correct. Please check that no problems are missing and that they are all legible. If not, please inform your instructor.
Download Hardcopy
You can also examine the following temporary files: hardcopy.log, hardcopy.aux, pdflatex.stderr, hardcopy.tex, pdflatex.stdout
********************************************************************************************
But, if we go to "Hmwk Sets Editor", -> "Edit Problems" and change the "Use Default Header File" for "Hardcopy Header" to setHeader.pg, then the Hardcopy download will work fine.
So it seems like the defaultHeader link somehow is broken. How can we fix it? Can someone help?
Thanks,
Steven Xiao
The following is the environment:
Operating System: RedHat Enterprise Linux 6.0
Output of uname -a:
Linux webwork1.wustl.edu 2.6.32-71.14.1.el6.x86_64 #1 SMP Wed Jan 5 17:01:01 EST 2011 x86_64 x86_64 x86_64 GNU/LinuxREADME file in /opt/webwork/webwork2 directory:
WeBWorK
Online Homework Delivery System
Version 2.4.9+
Branch: system/trunk/webwork2
http://webwork.maa.org/wiki/Release_notes_for_WeBWorK_2.4.9
Copyright 2000-2010, The WeBWorK Project
http://webwork.maa.org
All rights reserved.
README file in /opt/webwork/pg:
WeBWorKProgram Generation Language
Version 2.4.9+
Branch: system/trunk/pg
http://webwork.maa.org/wiki/Release_notes_for_WeBWorK_2.4.9
Copyright 2000-2010, The WeBWorK Project
http://webwork.maa.org
All rights reserved.
Output of the command httpd -V:
Server version: Apache/2.2.16 (Unix)Server built: Jan 5 2011 19:25:37
Server's Module Magic Number: 20051115:24
Server loaded: APR 1.4.2, APR-Util 1.3.9
Compiled using: APR 1.4.2, APR-Util 1.3.9
Architecture: 64-bit
Server MPM: Prefork
threaded: no
forked: yes (variable process count)
Server compiled with....
-D APACHE_MPM_DIR="server/mpm/prefork"
-D APR_HAS_SENDFILE
-D APR_HAS_MMAP
-D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)
-D APR_USE_SYSVSEM_SERIALIZE
-D APR_USE_PTHREAD_SERIALIZE
-D SINGLE_LISTEN_UNSERIALIZED_ACCEPT
-D APR_HAS_OTHER_CHILD
-D AP_HAVE_RELIABLE_PIPED_LOGS
-D DYNAMIC_MODULE_LIMIT=128
-D HTTPD_ROOT="/usr/local/apache2"
-D SUEXEC_BIN="/usr/local/apache2/bin/suexec"
-D DEFAULT_PIDLOG="logs/httpd.pid"
-D DEFAULT_SCOREBOARD="logs/apache_runtime_status"
-D DEFAULT_LOCKFILE="logs/accept.lock"
-D DEFAULT_ERRORLOG="logs/error_log"
-D AP_TYPES_CONFIG_FILE="conf/mime.types"
-D SERVER_CONFIG_FILE="conf/httpd.conf"
Output of the command perl -V:
Summary of my perl5 (revision 5 version 12 subversion 2) configuration:
Platform:
osname=linux, osvers=2.6.32-71.7.1.el6.x86_64, archname=x86_64-linux
uname='linux webwork1.wustl.edu 2.6.32-71.7.1.el6.x86_64 #1 smp wed oct 27 03:44:59 edt 2010 x86_64 x86_64 x86_64 gnulinux '
config_args='-de -Dprefix=/usr/local -Accflags=-fPIC'
hint=recommended, useposix=true, d_sigaction=define
useithreads=undef, usemultiplicity=undef
useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef
use64bitint=define, use64bitall=define, uselongdouble=undef
usemymalloc=n, bincompat5005=undef
Compiler:
cc='cc', ccflags ='-fPIC -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
optimize='-O2',
cppflags='-fPIC -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include'
ccversion='', gccversion='4.4.4 20100726 (Red Hat 4.4.4-13)', gccosandvers=''
intsize=4, longsize=8, ptrsize=8, doublesize=8, byteorder=12345678
d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=16
ivtype='long', ivsize=8, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8
alignbytes=8, prototype=define
Linker and Libraries:
ld='cc', ldflags =' -fstack-protector -L/usr/local/lib'
libpth=/usr/local/lib /lib /usr/lib /lib64 /usr/lib64 /usr/local/lib64
libs=-lnsl -ldb -ldl -lm -lcrypt -lutil -lc
perllibs=-lnsl -ldl -lm -lcrypt -lutil -lc
libc=/lib/libc-2.12.so, so=so, useshrplib=false, libperl=libperl.a
gnulibc_version='2.12'
Dynamic Linking:
dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E'
cccdlflags='-fPIC', lddlflags='-shared -O2 -L/usr/local/lib -fstack-protector'
Characteristics of this binary (from libperl):
Compile-time options: PERL_DONT_CREATE_GVSV PERL_MALLOC_WRAP USE_64_BIT_ALL
USE_64_BIT_INT USE_LARGE_FILES USE_PERLIO
USE_PERL_ATOF
Built under linux
Compiled at Jan 5 2011 16:23:09
@INC:
/usr/local/lib/perl5/site_perl/5.12.2/x86_64-linux
/usr/local/lib/perl5/site_perl/5.12.2
/usr/local/lib/perl5/5.12.2/x86_64-linux
/usr/local/lib/perl5/5.12.2
.