double check that the $WAGLOBAL_Root_URL is set correctly ion the WA_Globals file.
This nust be set as the full root to the PowerStore files. If the PowerStore files are at:
products_results.php
the $WAGLOBAL_Root_URL must be seet as:
$WAGLOBAL_Root_URL = "http://www.mydomain.com/powerstore/";
including the slash at the end.
Also the $WAGLOBAL_remoteRoot must be properly set, for the example above, the $WAGLOBAL_remoteRoot would be:
$WAGLOBAL_remoteRoot = "/powerstore/";