XCart 4.2 Problem

XCart Problem - Current XCart package has been modified.? I bel;ieve these modifications have not taken into account Electronic distributed goods.? The site now needs to sell Electronic distributed goods which has created a problem in checking out. This bid is to find and fix this problem.? The problem may not be the modified code and may just be the administrator of the site (me) has not configured the site correctly or created the electronic distributed good correctly. As the winning bidder of this job your deliverable is to either fix the code and provide instructions and code/program updates explaining problem and if necessary clarification on configuration settings if it is a configuration issue.