You are right - when the default path to install the program came up, C:\Program Files x86\Amazing Charts, I changed the C to a D.

I have the users (that are in the Staff group) members of the Domain Users. The users in the management groups are also members of the Domain Admins. No problem running AC from any client using management user_ids (also domain admins). When I add a staff user_id as a member of the Domain Admin .... no problem as well.

I have 'Everyone' with Full control for the Amazing Charts Folder (and the xml file). Even tried adding Domain Users by right clicking the Folder (and File) and giving Full Control permission. No luck. Simply cannot connect to the database without being part of the Domain Admin!