A. There are basically two reasons why you would receive an "Invalid File Format" message when trying to attach a document to your profile in Hal.jobs.

1. You have special characters(such as periods, comma, forward and back slashes) within your file name. For example, a file name of: John A. Smith's resume.doc would return the error message because of the period after the A and also the apostrophe in the last name. You would need to rename the document and remove these characters.
2. The document extension(type of document) is not acceptable within Hal.jobs. The system will accept .doc, .docx, .txt, .pdf, and .jpg extensions.