Re: The system has attempted to use an undefined value, which usually indicates a programming error, either in your code or

[Adam Cameron]

Can you just verify that the null pointer error is definitely referencing
the line(s) of code where the QoQ is, and not a different part of the
function?

make sure you VAR all your variables in the function.  Most aren't.

It's not relevant to this, but you will make your code an awful lot clearer
and easier to follow if you scope all your variables (eg:
arguments.colSort, not simply colSort).

What happens if you take the ORDER BY out?

-- 
Adam