Upload image problem

when trying to upload image to slider i get this error:
ERROR No editor could be selected. Check file permissions

Slide ID: 602

object(WP_Error)#397 (2) {
[“errors”]=>
array(1) {
[“image_no_editor”]=>
array(1) {
[0]=>
string(28) “No editor could be selected.”
}
}
[“error_data”]=>
array(0) {
}
}

http://wordpress.org/plugins/easy-wp-parallax-slider/