Question pdf export

Dear Friends
I solved the problem simply after kunena.forum.css modification (I commented 5 css lines) to make it compliant with CSS 2.1 level. No problem with memory size or time limit in the php.ini because I tested the website on my local Apache server too where I set the php.ini to all possible limits.
I suggest with any browser on Mac platform to make the CSS file 2.1 compatible and all works fine.

Hello,

Maybe you can explain what do you have changed, to help others users

Sure nothing special...
I just commented the following lines on kunena.forum.css:

786 /*word-wrap: break-word; Internet Explorer 5.5+ */
801 /*font-size-adjust: none;
802 font-stretch: normal;*/
860 /*word-wrap: break-word; Internet Explorer 5.5+ */
1286 /*font-size-adjust: none;*/

So my CSS validator says that the file is CSS 2.1 compliant and the PDF export works fine too
(over 250 post sampled in 87 pages in about 1 minute!)
I repeat this issue I have tested only on Mac platform and with the latest release of Safari, Mozilla and Google Chrome.
No match about Explorer 5.5 (on Mac OS X is an "archeological" found...) or Opera (I do no like it) and other browsers on Windows operating systems
I think that the PDF class generator founded any problems with old CSS page description but now the PDF parameters can be applied without conflicts.