i was looking around in the web and i found that previews versions had this problem . Now This problem just kicked on 2.0.61 version
WHEN I TRY TO UPLOAD POHOTOS
Invalid data type used for entity. Please use stdClass or a subclass of C_DataMapper_Model. Arrays will be supported in the future.
19 images were uploaded successfully
Most of the time photos are uploaded as it said on top, but when i go to gallery i go forward next like 4 or sometime 5 photos and gallery is gone, Sometime happen right in first photo sometime in middle: Depends.
This also effected my old galleries that been there for months . I try to downgrade to old version but it seems that attachment on the post does not work.
Please guys tell me what to do .
regards
https://wordpress.org/plugins/nextgen-gallery/