I can not upload pictures in the article. There are the following errors:


Warning: preg_match() [function.preg-match.php]: Compilation failed: invalid range in character class at offset 7 in /home/crazylin/www/ch-mundart.ch/administrator/components/com_k2/lib/class.upload.php on line 2910

Warning: preg_match() [function.preg-match.php]: Compilation failed: invalid range in character class at offset 7 in /home/crazylin/www/ch-mundart.ch/administrator/components/com_k2/lib/class.upload.php on line 2950

Warning: preg_match() [function.preg-match.php]: Compilation failed: invalid range in character class at offset 7 in /home/crazylin/www/ch-mundart.ch/administrator/components/com_k2/lib/class.upload.php on line 2977

Warning: preg_match() [function.preg-match.php]: Compilation failed: invalid range in character class at offset 7 in /home/crazylin/www/ch-mundart.ch/administrator/components/com_k2/lib/class.upload.php on line 3004

Warning: preg_match() [function.preg-match.php]: Compilation failed: invalid range in character class at offset 7 in /home/crazylin/www/ch-mundart.ch/administrator/components/com_k2/lib/class.upload.php on line 3022

Hi. This is caused due to PHP 5.5 update. It has already been fixed in K2 development version. You can get it from getk2.org/assets/get .

Thank you very much
Now I get no error message, but only a white page.

Just to make sure that you don't get any errors, install the 2.6.8 version. Then edit file administrator/components/com_k2/lib/class.upload.php with this github.com/joomlaworks/k2/blob/e5ea56e4d1923404a085ea463e4d1632e4c4659f/administrator/components/com_k2/lib/class.upload.php .

Thank you for your answer

I have now K2 version 2.6.8 installed and "/ administrator/components/com_k2/lib/class.upload.php" replaced. but the problem is not resolved. I get a white page. I get no error message.

Go to Joomla! configuration and set error reporting to maximum. Then you should see an error message at the white screen.

The error reporting is maximum. :-(
but there is no error.

Where exactly are you getting the white screen? Try to right-click on the white screen, view page source and check for errors there.

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<a href="#" onclick="javascript:this.parentNode.parentNode.style.display='none';return false;"><img src="/media/k2/assets/images/ie6nomore/ie6nomore-cornerx.jpg" style="border:none;" alt="Schließen Sie diese Mitteilung"/></a>
</div>
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<div style="width:75px;float:left;">
<img src="/media/k2/assets/images/ie6nomore/ie6nomore-warning.jpg" alt="Warnung!"/>
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