Thanks for your comments Nick. I did find the FAQ entitled 'Blank page, white page, nothing, just nothing' at
www.joomlapolis.com/content/view/3949/58/ which had similar suggestions and folowed them. Unfortunately, while informative, they did not solve the problem.
The debug returns nothing on the blank pages. it's not writing html, it is returning an error 500.
I also added something to the htaccess file to address the possible memory issue.
If it were broken html, I guess it would have to be html that CB writes since these pages work fine if the user is not logged into CB or if the mod_cbcontent is not enabled.
No metion of the 500s in the error log.
Post edited by: teena.walkerrobin@sbcglob, at: 2009/03/29 00:57