Hi, I hate making incompatible changes, but we've had to do it with the latest set of patches pushed to image_factory. Basically, what we were calling 'image' objects in iwhd are now called 'target_image' objects If you want to try and migrating your existing images to this new format, you can try something like: $> cat > update.js <<EOF db.main.update({ _bucket : "images" }, { \$set: { _bucket : "target_images" } }, false, true) db.main.update({ _bucket : "images", object_type : "image" }, { \$set: { object_type : "target_image" } }, false, true) db.main.find({ _bucket : "provider_images", object_type : "provider_image" }).forEach(function upd(pi) { pi.target_image=pi.image; db.main.save(pi); }) db.main.update({ _bucket : "provider_images", object_type : "provider_image" }, { \$unset: { image : 1 } }, false, true) EOF $> mongo --port 27018 repo update.js $> mv _fs/images _fs/provider_images If anyone wants to dig into creating a more useful migration instructions, I'm happy to help. Cheers, Mark.