We just upgraded our Apache using the Easy Apache update, and in the process, our PHP was upgraded from 4.X to 5.X in order to suppoer the GD library.

Now we can get to our admin page just fine, but navigating to our main store index is blank white:

http://www.mjmmagic.com/store/

Can anyone help troubleshoot this with me to determine what may be wrong?

Here are some settings from the Server/Version Info screen:

System Linux server1.mjmmagic.com 2.4.21-27.ELsmp #1 SMP Wed Dec 1 21:59:02 EST 2004 i686
Build Date Jul 14 2008 13:14:55

Configure Command './configure' '--disable-pdo' '--enable-bcmath' '--enable-calendar' '--enable-ftp' '--enable-gd-native-ttf' '--enable-libxml' '--enable-magic-quotes' '--enable-sockets' '--prefix=/usr/local' '--with-apxs2=/usr/local/apache/bin/apxs' '--with-curl=/opt/curlssl/' '--with-curlwrappers' '--with-freetype-dir=/usr' '--with-gd' '--with-imap=/opt/php_with_imap_client/' '--with-imap-ssl=/usr' '--with-jpeg-dir=/usr' '--with-kerberos' '--with-libxml-dir=/opt/xml2/' '--with-mysql=/usr' '--with-mysql-sock=/var/lib/mysql/mysql.sock' '--with-png-dir=/usr' '--with-ttf' '--with-xpm-dir=/usr/X11R6' '--with-zlib' '--with-zlib-dir=/usr'
Server API Apache 2.0 Handler
Virtual Directory Support disabled
Configuration File (php.ini) Path /usr/local/lib
Loaded Configuration File /usr/local/lib/php.ini
PHP API 20041225
PHP Extension 20060613
Zend Extension 220060519
Debug Build no
Thread Safety disabled
Zend Memory Manager enabled
IPv6 Support enabled
Registered PHP Streams php, file, data, tftp, ftp, telnet, dict, ldap, http, https, ftps, compress.zlib
Registered Stream Socket Transports tcp, udp, unix, udg
Registered Stream Filters string.rot13, string.toupper, string.tolower, string.strip_tags, convert.*, consumed, convert.iconv.*, zlib.*

This program makes use of the Zend Scripting Language Engine:
Zend Engine v2.2.0, Copyright (c) 1998-2007 Zend Technologies
with Zend Extension Manager v1.2.2, Copyright (c) 2003-2007, by Zend Technologies
with Zend Optimizer v3.3.3, Copyright (c) 1998-2007, by Zend Technologies