cfgrid / cfc

trying to get this code below working but I get an "Exception thrown and not caught " issue and no data is returned to the cfgrid.
The cfc is called and runs fine as adding cfdebug onto the url shows me the data

Code below
<cfform format="html" name="ResellersList" width="600">

<cfgrid name="grid_Tables" format="html" pagesize="5" selectmode="row"
bind="cfc:cfc.Resellers.GetResellerList({cfgridpage},{cfgridpagesize},{cfgridsortcolumn},{cfgridsortdirection})">

<cfgridcolumn name="str_FirstName" header="First Name">
<cfgridcolumn name="str_LastName" header="Last name">
<cfgridcolumn name="str_Username" header="User name">
<cfgridcolumn name="str_emailAddress" header="Email" >
</cfgrid>

</cfform>


the cfc


<cffunction name = "GetResellerList"
access = "remote">

<cfargument name="page" required="yes">
<cfargument name="pageSize" required="yes">
<cfargument name="gridsortcolumn" required="yes">
<cfargument name="gridsortdirection" required="yes">

<cfquery datasource="#Request.superdsn#" name="GetResellerListData">
SELECT *
FROM tbl_Resellers
<cfif gridsortcolumn NEQ ''>
ORDER BY #gridsortcolumn# #gridsortdirection#
</cfif>
</cfquery>

<cfreturn GetResellerListData>

</cffunction>