While changing reports in the Genie MyReports.config file, we encountered an unexpected invalid comment syntax error message. After checking the code and some investigation, we discovered that the character string -- (double-hyphen) is not allowed within comments in XML. According to the W3C Extensible Markup Language (XML) 1.0 (Third Edition) specifications: For compatibility (with SGML), the string -- (double-hyphen) MUST NOT occur within comments.] What an esoteric topic you say? We discovered its very easy to come up against this in Genie. In our case we created a new Loans By Borrower report, and commented out the default report. The error arose because the character string -- is used four times in the default report, as header text before fields. Changing it to a single dash was all that was needed to remove the error. The -- character string in used in other reports as well.