Error When Uploading 1099-B for IRS

I've finished entering mutual fund sales using one of my 1099-consolidated documents and now TurboTax is offering to have me upload a PDF version of the 1099-B since some of the info I entered needs to be validated by the IRS.

 

I do not have a specific 1099-B but only the 1099-consolidated. I attempted to upload this file in PDF form but TurboTax Online gives me an error saying that this file is not a valid PDF.

 

Has anyone else run into this issue? I'd much prefer to upload the file rather than mail it but I cannot get this function to work.