Thanks. I did enable it by uncommenting the SetEnv directive, and it was helpful early in the implementation to identify the issues being caused by other older plugins.
Here is the system information:
Browser Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_5) AppleWebKit/537.17 (KHTML, like Gecko) Chrome/24.0.1312.56 Safari/537.17
Role super
System
Omeka 2.0
PHP 5.2.17 (apache2handler)
OS Linux 2.6.18-274.3.1.el5 x86_64
MySQL Server 5.1.52
MySQL Client 5.1.52
Apache Apache/2.2.21 (EL)
PHP Extensions
Regular apache2handler, bz2, calendar, ctype, curl, date, dbase, dom, exif, filter, ftp, gd, gettext, gmp, hash, iconv, json, ldap, libxml, mbstring, mcrypt, mysql, mysqli, openssl, pcre, PDO, pdo_mysql, pdo_sqlite, posix, Reflection, session, shmop, SimpleXML, soap, sockets, SPL, standard, sysvmsg, sysvsem, sysvshm, tokenizer, wddx, xml, xmlreader, xmlwriter, xsl, zip, zlib
Plugins
Coins 2.0 (inactive)
Contribution 2.2.1
CsvImport 1.3.2 (inactive)
DocsViewer 2.0 (inactive)
Dropbox 0.7
ExhibitBuilder 2.0
Geolocation 1.2
ImageAnnotation 1.0 (inactive)
OaiPmhRepository 1.0 (inactive)
SimplePages 2.0
SimpleVocab 2.0
SocialBookmarking 1.0.1 (inactive)
Themes
Berlin 1.3
Griddy 0.1
Minimalist Omeka Theme 1.2
Rhythm 1.2
Seasons 2.0 (current)
Sorin Oak 0.1
Stedwards 1.3
Thanks, Roy 2.0
Any additional advice is welcome.