windows service packages
reinstall visual studio and your windows service packages
open task manager, click on processes, if process is running end it, if not start up program, if it doesn't run end it and then try opening it.
lol this is really weird. i have never seen a program be this persistent into not opening
<ErrorCheckLog><Error ECRunNum="1" EFRunNum="1" TimeStamp="2014-03-02 15:00:20" TaxReturnType="fd" AuditIndicator="P" FormId="3" FormName="schedb" FieldId="52020" FieldName="Field 52020/000" CopyNumber="1" FilingType="P" ErrorTag="kMissingData">Answer the question below.</Error></ErrorCheckLog>