518555 - Logged into AT&T Uverse account, tried to download PDF bill; it downloaded then error msg below

Status: UNCONFIRMED

(Firefox :: File Handling, defect)

Description

[jtz5]

User-Agent:       Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_5_8; en-us) AppleWebKit/531.9 (KHTML, like Gecko) Version/4.0.3 Safari/531.9
Build Identifier: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.0.7) Gecko/2009021906 Firefox/3.0.7

Tried to download paper version of my AT&T Uverse bill named loadPDFAction.do and got error message below.  I am able to log into my AT&T account with Firefox, go to the Bill Summary page, but I can't load the paper version of the bill.  I can load it in Safari.  Thanks.

Download Error /Users/jeffreyzboril/Downloads/loadPDFAction-2.do could not be opened, because an unknown error occurred.

Try saving to disk first and then opening the file.

Reproducible: Always



Expected Results:  
Downloaded the PDF, then opened it in Adobe.