customer list

These symbols are showing up as customer #486 in my customer list:

Панкратьев Сергей

Here are the messages at the top of the page. I noticed the customer list is out of sequence. This one is (#486) sandwiched in between customer #505 and #504.

Warning: array_merge() [function.array-merge]: Argument #1 is not an array in D:\home\castersflyshop.com\wwwroot\onlineflyshop\admin\customers.php on line 1099

Warning: array_merge() [function.array-merge]: Argument #2 is not an array in D:\home\castersflyshop.com\wwwroot\onlineflyshop\admin\customers.php on line 1101

Warning: reset() [function.reset]: Passed variable is not an array or object in D:\home\castersflyshop.com\wwwroot\onlineflyshop\admin\includes\classes\object_info.php on line 29

Warning: Variable passed to each() is not an array or object in D:\home\castersflyshop.com\wwwroot\onlineflyshop\admin\includes\classes\object_info.php on line 30

thanks