The file r3ias.dll is an interactor module that is a piece of Realsoft 3D created by Realsoft Oy. Realsoft3D is a modeling and raytracing program that produces photorealistic images. This file is used in creating geometric objects based on user input.
An error with this file will disable some of the core functions of Realsoft3D. You should clean your Windows registry to fix the problem. When you start getting strange errors on your computer, the problem often is related to your registry. Windows tracks all the files installed on your computer using the registry database. If there is a mistake in the registry, Windows will give you errors.
ZookaWare PC Cleaner cleans up mistakes in the registry and gets rid of those errors. Run a free ZookaWare PC Cleaner scan right now to see if your registry is in need of a good cleaning.