Have this strange error - happens to only one member when they either try to sign in or someone goes ( or tries to go ) to their profile page:

Error details: Type: Error Message: Argument 1 passed to GROUPS_BOL_Service::getGroupUrl() must be an instance of GROUPS_BOL_Group, null given, called in /var/www/vhosts/diamondencounters.ca/httpdocs/dd/ow_plugins/attachments/classes/groups_bridge.php on line 62 and defined File: /var/www/vhosts/httpdocs/dd/ow_plugins/groups/bol/service.php Line: 387
Running 1.7.1 and the latest group plugin.
Nobody else has this issue.  Any thoughts?  Thanks