In order to fix dll related errors, you need to copy the. After downloading the zip file, unzip it to a convenient location on your computer. You can download vision.dll for free from the download section on this page. The current version of dll file available on our site is 9.21.0.0 with a size of 5.93MB. To fix the error, you need to copy the missing vision.dll file to your system or replace the corrupted dll file with a working one by following the instructions below. The program can't start because vision.dll is missing from your computer.A required component is missing: vision.dll.The file vision.dll is missing or corrupted.This application failed to start because vision.dll was not found.You may receive an error message like the ones below that indicates the file is not found or damaged. Vision.dll file is a critical component for the software to work properly without any problems. The file was licensed as Copyright © 1998-2011 MyTopo. The file and the associated Terrain Navigator Pro software was developed by MyTopo. The file vision.dll is a 32bit Windows DLL module for Terrain Navigator Pro or other related programs.