Steve,
We don't have anything specific to 6.9, but see https://www.docuware.com/support_faq/index.php?solution_id=4549 for more information on a known issue in 6.10 which may be related.
Also, check your DWSetupTrimmed log: if one of the entries is, "An error during installation. The module will now be uninstalled so that it is easier to fix.", then try https://www.docuware.com/support_faq/index.php?solution_id=5305
Finally, if none of that work, please open a support request so that we can take a look.
Christopher Ure
Software Support Specialist
Support Team GREEN - Americas