First of all, I really like what you’re doing here. I love dhtmlx-scheduler.
But, I have a problem, I can’t managed to export in PDF from IE, Chrome or Safari. It works well on Firefox and Opera. I wanted to change the $debug variable in generate.php but it’s not there anymore so I don’t have more information.
Are you sure that you are using latest version of both server side and dhtmlxscheduler_pdf.js ( be sure to clear cache ) - because latest version must solve problems in IE and Chrome , which was common for older one.