Have you tried:
– deactivating all plugins to see if this resolves the problem? If this works, re-activate the plugins one by one until you find the problematic plugin(s).
– switching to the default theme to rule out any theme-specific problems?
– resetting the plugins folder by FTP or phpMyAdmin? Sometimes, an apparently inactive plugin can still cause problems.
– re-uploading the wp-admin and wp-includes folders from a fresh download of WordPress?
– increasing the available memory?
http://ww.wp.xz.cn/support/topic/253495#post-1017842
Try to Right Click the ADD THE IMAGE link and choose open it in new window.
Thanks
That shouldn’t be necessary. If the popups aren’t working correctly, there’s a good chance that it’s a symptom of a more serious problem.
thanks – uploaded wordpress again. fixed it.