Update.
Thanks for the help! This is the reason I'll be a Zen Cart Lifer.
My.
There are a lot of header_php.php files and I had one in the wrong folder from the last addon I installed.
What threw me off is I create a check list when I install addons that show the path, file size and that I double check that its correct.
I only upload one file a time and check it off the list.
My list showed everything correct but some how I uploaded a file to the wrong folder.
Thanks to DrByte, I got to checking the header_php.php files and find my error.
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