Problem with updating

I had version 3.4.9, and was loving it. Just redid everything, had it perfect. Found out tonight it wasn't the current version, so I uploaded the newest release into my themes directory- I did not overwrite the old version.

When I activated it, it was fine. I uploaded my settings I had just exported, and got this error:

Warning: Invalid argument supplied for foreach() in /home/content/b/o/e/boerbabe21/html/wp-content/themes/atahualpa/functions.php on line 59

Fatal error: Cannot use string offset as an array in /home/content/b/o/e/boerbabe21/html/wp-content/themes/atahualpa/functions/bfa_get_options.php on line 452

in place of my blog displaying.

I tried to switch back to my older version, and I got the same error. No blog.

I deleted both versions completely, and re-uploaded the older one. Same error.

How do I fix this? And what did I do to cause this problem?