The downloadable dll's were last used with version 2010. With both DirectRT and MediaLab v2012, we completely have done away with the need for the IP dll's. We just thought it was a pain for people to have to download and install them.
So now we hard code the IPs or IP patterns directly into the programs so that you don't have to do a thing except to enter 99999 as the authorization code. This means you will just need to let us know what IP patterns are used with your site license. We include them directly in the programs and post the updated versions and let you know when they are available. If you send an email to sales@ John can tell you if your IPs are already in the currently posted version. Or you could just try typing 99999 and find out immediately!