I'm running 4.2.1b and when I go to the Bug Tracker I get the following:

Warning: array_merge() [function.array-merge]: Argument #2 is not an array in C:\Program Files\Apache Group\Apache2\htdocs\SugarCRM\include\utils\array_ utils.php on line 63

It doesn't appear to be affecting anythign but I wanted to make sure I haven't done something wrong. Can anyone tell me what is causing this?