Image Map and MS CGI controls

[Me My]

Trying to make a basic image map from a layer of GPS points. However, I am
getting the MS error message "msQueryByPoint(): Search returned no results.
No matching record(s) found." when trying this. The actual map itself
displays just fine, it is the image map that is the problem and passing
arguments to the CGI. The MAXSCALE for the GPS layer is set to 7,000,000.

The html form button being used to initiate the image map is:

<form name="map" method=GET action="/cgi-bin/mapserv">
<input type="hidden" name="map" value="/var/www/html/maps/imap.map">
<input type="hidden" name="qlayer" value="gps">
<input type="hidden" name="mode" value="nquery">
<input type="hidden" name="searchmap" value="true">
<input type="hidden" name="mapext" value="-180 -90 180 90">
<input type="hidden" name="scale" value="6500000">
<center><input type="submit" value="Image Map"></center>
</form>

Am I missing something? Map center, map size, etc?
Thank you.
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