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patch (based on cvs from 20071026):
functions.php
need to made changes in function GetPart

401,402c401,404
< if ($part_no != '')
< $part_no = $part_no . '.';
---
> if ($part_no != '') {
> if (substr($part_no,-1)!='.')
> $part_no = $part_no . '.';
> }