1. I am try using tex notation debug, http://your.site.com/filter/tex/texdebug.php. 2. I am choose no 3 for test: The following tests are available: See the cache_filters database entry for this expression (if any). Delete the cache_filters database entry for this expression (if any). Show a graphic image of the algebraic expression rendered with mimetex. Show a graphic image of the algebraic expression rendered with Tex/Ghostscript. Show command execution output from the algebraic expression rendered with Tex/Ghostscript. Check slasharguments setting. 3. and click Doit. I am getting result: Can not output detailed information due to security concerns, please turn on debug mode first. Warning : Cannot modify header information - headers already sent by (output started at /home/ yoursite /public_html/smachmat/filter/tex/texdebug.php:176) in /home/yoursite/public_html/yoursite/filt...