Do you want to do this for an open image file or do a batch of files from folder A? Also what OS are you using: Mac or Win?
I want to do this for a batch of files frome folder A.
I've got Windows 7 and the master Creative Cloud.
download this zip file and try this script. It will save all the files as psd in a folder called "done" under the target folder that you select. It will not stop to let you size the placed files.
Edit: I had the wrong link. It is correct now.
I put the wrong link in the message. I corrected it.