tpl_product_upload_info_display.php as an override for the file tpl_product_info_display.php, but the file is not recognized.
Overrides are the SAME file name (edited) and in a folder named as your template name.
Additionally, in that new folder you can create other folders named for the default page name and place individual page overrides in them BUT these are still named the same as the default.
i.e.
Code:
my_template
|
common(contains global page overrides)
|
tpl_header.php
|
index (contains index or home page only overrides)
|
tpl_header.php
So if you have a new page name working for your product type- check the browser for what the page name being parsed is and proceed accordlingly.