Hello Travis:

Sign On Failed: Can be as simple as a mistyped user ID or Password

Fiscal Warning: You haven't provided the exact message but there is a warning that indicates the signon date (on the password screen) does not match the Fiscal Year. For instance, the fiscal year for the selected company is Jan-Dec 2008 but the user logs in with a 2007 date. That will produce a warning but let you proceed.

Do use remote access software like GotoAssist? That would help you in this situation. What is the exact message?