Error from source
<b>Fatal error</b>: Call to undefined function mhash() in <b>/Users/HD_Purple/Sites/frubob/WA_eCart/checkoutScripts/WA_simlib.php</b> on line <b>30</b><br />
Line 30 from WA_simlib.php
return (bin2hex (mhash(MHASH_MD5, $data, $key)));