During the installation of the 9.0 version, I get a 1901 error.
We have found that some disks cannot be installed on some computers, yet they install fine on other computers. We went to our cd manufacturer and they found that the problem was due to an equipment problem on their end. They are in the process of correcting the problem and are pulling the bad stock as we speak. You can either request a cd-rom replacement or a download replacement. Please fill out the support mail form to make your request.