Hi Nathan,
Not a stupid question at all. This is a problem related to the problem discussed in thread:
phpclasses.org/discuss/package/3444
...
The grid uses an Ajax call to get the data into it.
This Ajax call is built within the javascript code and it calls the same .php file from which the javascript was invoked with a number of new GET variables (like op=v and start=0 etc), and without the _POST['headend'] the php file is reading out.
Therefore this call doen't give the right data back and the star spins and spins,.... This also explains why it does work if you name the table name in the php file, not via the (GET OR POST) variables.
So the conclusion is that, how sadly, the grid wasn't developed for the purpose of reading out critical information via GET or POST. I am thinking about a redesign that solves this problem.
Meanwhile, you could use cookies or read the information from a file or another source that you can reach from your php code to get the tablename, but not via the GET or POST parameters.