Hi - me again. 
I’m having this same issue but not sure where I’ve gone wrong (I’ve double-checked the code). Basically, the file uploads correctly, gets to the placement window and when you click on the button to place and close, the file code doesn’t get placed and the window/popup doesn’t close but goes to the home page (shown in that tiny window).
here’s my code:
Inside the SAEF:
<small><a >Click here to Upload a file</a></small>
Upload file code:
{exp:file_upload:upload_form form_name="member_upload" destination="Member Uploads" field_name="ll_text" return="living_legends/file_upload_placement"}
<p><input type='file' name='userfile' /></p>
<input type='submit' value='Upload' />
{/exp:file_upload:upload_form}
Placement window code:
{javascript}
{exp:file_upload:upload_confirm field_replace="replace"}
<p>File sucessfully uploaded!</p>
<input type="submit" value="Place Image and Close Window">
{/exp:file_upload:upload_confirm}
