I'm using Adwords Editor to generate a .CSV file for my campaign. When I upload it into Export202, I receive the error "You must upload a .csv file"

I'm trying to convert Google Adwords to Yahoo.

The file is quite large, but it is in the correct format..

What should I do?

How long is the file?

I assume it is, but are u sure the extension is .csv?

You have to open the file and probably resave it as a CSV. AdWords Editor exports files and Unicode .CSV files, which for some reason can't be opened like a regular .CSV. Go into the file and save as a plain old .CSV, it might work then.

I've run into that problem several times before with other tools as well.

Infinitycurve is correct, apparently excel has multiple .CSV types