I started getting this error message with the creation of thumbnails from an uploaded picture last week. There seems to be no apparent cause, nor anything that has been modified. All permissions seem to be set as they should be, but still this message appears when trying to create a thumbnail...
Warning: imagejpeg(): Unable to access /usr/local/psa/home/vhosts/skytower.me.uk/httpdocs/wp-content/_*****.jpg in /usr/local/psa/home/vhosts/skytower.me.uk/httpdocs/wp-admin/iimage-browser.php on line 403
Warning: imagejpeg(): Invalid filename '/usr/local/psa/home/vhosts/skytower.me.uk/httpdocs/wp-content/_*****.jpg' in /usr/local/psa/home/vhosts/skytower.me.uk/httpdocs/wp-admin/iimage-browser.php on line 403
Thumbnail path invalid
Any ideas would be greatly appreciated.