Suite Warning: array_sum() Error
 

Hi, I've just performed maintenance on my site by rebuilding indexes etc. and now receive the error below:

Code:
Warning: array_sum() [function.array-sum]: The argument should be an array in [path]/includes/blog_functions_shared.php on line 80

Warning: array_sum() [function.array-sum]: The argument should be an array in [path]/includes/blog_functions_shared.php on line 80

Warning: Invalid argument supplied for foreach() in [path]/includes/functions.php(1553) : eval()'d code on line 3

Warning: Invalid argument supplied for foreach() in [path]/includes/functions.php(1553) : eval()'d code on line 55
Can anyone help?