Using LaTeX in WordPress

Some versions of ImageMagick fail to process the transparency command properly. If you find that this is causing problems for you then in class.latexrender.php remove the transparency command

-transparent "#FFFFFF"

so

// imagemagick convert ps to image and trim picture
$command = $this->_convert_path." -density ".$this->_formula_density." -trim -transparent "#FFFFFF" ".$this->_tmp_filename.".ps ".$this->_tmp_filename.".".$this->_image_format;

becomes

// imagemagick convert ps to image and trim picture
$command = $this->_convert_path." -density ".$this->_formula_density." -trim ".$this->_tmp_filename.".ps ".$this->_tmp_filename.".".$this->_image_format;

Thanks to Kevin Knuth for pointing out this workaround.