Hello,

Our current joomla+k2 installed on a windows server (iis+php 5.4.45) and works fine. I moved all files and database to new server based on nginx 1.8+php 5.6+mysql 5.6. All of joomla extension and components work perfect except k2 add item. If I edit an item which created before, the save button does not work and the most important issue is about image. I create a new item and then choose an image file and click on save but no thing happen! There is no error in nginx error log file and /media/k2/items/cache has full permission access (777). All needed php modules (gd,..) are installed. What should I do to resolve this
issue ?

Thanks

Can you enable error reporting to look for any PHP notices?
Are there any js errors in your browser developer tools console?