PDF export of reports/work/work synthesis per activity

Hi,

It seems that when there are lots of data to export, this PDF export does not work correctly concerning "work synthesis per activity".

Only a ".php" file empty is created.

Thanks in advance for your help.

My error log
2013-02-08 10:45:44 ***** ERROR ***** on file 'C:\c:\wamp\projectorria\external\html2pdf\html2pdf.class.php' at line (1251)
2013-02-08 10:45:44 ***** ERROR ***** cause = ERROR n°1 : The tag <BUTTON> does not yet exist.If you want to add it, you must create the methods o_BUTTON (for opening) and c_BUTTON (for closure) by following the model of existing tags.If you create these methods, do not hesitate to send me an email to This email address is being protected from spambots. You need JavaScript enabled to view it. to included them in the next version of HTML2PDF.
2013-02-08 10:45:44 ***** ERROR ***** => #0 C:\c:\wamp\projectorria\external\html2pdf\html2pdf.class.php (1226) -> _executeAction()
2013-02-08 10:45:44 ***** ERROR ***** => #1 C:\c:\wamp\projectorria\external\html2pdf\html2pdf.class.php (5446) -> _makeHTMLcode()
2013-02-08 10:45:44 ***** ERROR ***** => #2 C:\c:\wamp\projectorria\external\html2pdf\html2pdf.class.php (1255) -> _tag_open_TD()
2013-02-08 10:45:44 ***** ERROR ***** => #3 C:\c:\wamp\projectorria\external\html2pdf\html2pdf.class.php (1212) -> _executeAction()
2013-02-08 10:45:44 ***** ERROR ***** => #4 C:\c:\wamp\projectorria\external\html2pdf\html2pdf.class.php (5446) -> _makeHTMLcode()
2013-02-08 10:45:44 ***** ERROR ***** => #5 C:\c:\wamp\projectorria\external\html2pdf\html2pdf.class.php (1255) -> _tag_open_TD()
2013-02-08 10:45:44 ***** ERROR ***** => #6 C:\c:\wamp\projectorria\external\html2pdf\html2pdf.class.php (1212) -> _executeAction()
2013-02-08 10:45:44 ***** ERROR ***** => #7 C:\c:\wamp\projectorria\external\html2pdf\html2pdf.class.php (408) -> _makeHTMLcode()
2013-02-08 10:45:44 ***** ERROR ***** => #8 C:\c:\wamp\projectorria\view\print.php (136) -> writeHTML()
2013-02-08 10:45:44 ***** ERROR ***** => #9 C:\c:\wamp\projectorria\view\print.php (120) -> finalizePrint()
Thanks