Try clearing your cookies and cache to see if this helps.
Here's how:
Each browser has a slightly different method for deleting cookies. Choose the browser you're using:
A full or corrupted cache can cause problems in TurboTax, so sometimes you need to clear your cache (that is, remove these temporary files).
Here are the official instructions for the most popular browsers:
Apple's official support site doesn't appear to contain instructions for clearing the cache in Safari. Your best bet is to search the Internet for clear Safari cache or similar search terms.