Error after upgrade to 3.6.1

Hi,

this is the first time taht I post here.
I'm very happy to work with Atahualpa.
Before I ran the export file of configuration
Yesterday I updated the theme from 3.4.9 to 3.6.1 with automatic update.
It was successfuly after I ran the import file but at the end I got these errors:

Warning: Invalid argument supplied for foreach() in /home/mhd-01/www.fabiofiocco.it/htdocs/wp-content/themes/atahualpa/functions.php on line 55

Warning: Invalid argument supplied for foreach() in /home/mhd-01/www.fabiofiocco.it/htdocs/wp-content/themes/atahualpa/functions.php on line 844
2

Warning: extract() [function.extract]: First argument should be an array in /home/mhd-01/www.fabiofiocco.it/htdocs/wp-content/themes/atahualpa/index.php on line 4

Fatal error: Cannot increment/decrement overloaded objects nor string offsets in /home/mhd-01/www.fabiofiocco.it/htdocs/wp-content/themes/atahualpa/index.php on line 13

After I choosed the TwentyTen theme and I uninstalled from WP Atahualpa theme and I try to reinstall but after when I try to activate I got the same errors.

Can you help me, please?

Thanks very much.
Best
Enrico