Forum OpenACS Q&A: Response to installation trouble with OpenACS3.5.2 on AOLServer 3.4.2

ad_parameter returns "" when it can't find the requested key...  have you tried a simple test script (ns_return 200 text/html [ad_parameter UsersTableContainsConvertedUsersP]) to make sure it's what you think it is?  (It should be zero, BTW.)