This has been said in many different ways, but here it goes again. On the site you are trying to upload to, download a full EP text file. Open both your text file and the one you just downloaded and compare the top lines (using a spreadsheet). Obviously, they don't match since you are getting the errors.
Copy/paste the data from your text file into the downloaded one, using the last word on the top line as a guide. You will need to assign a model name for all products (1st column), and it needs to be unique. If you need an easy way to do this, just copy/paste the image names into that column and do a replace after highlighting that column. Just replace .jpg (or whatever) with a "null", since the products should all have a unique image, that should work. The first column must be v_product_model and the last colum must be EOREOR, anything in between is what you want to include. Save your changes to a tab delimited text file and upload. Backup your site first so that if something goes astray, you can just restore it back to what it was before the upload.
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