Check the following folders for Mids installations
%USERPROFILE%\AppData\Local\VirtualStore\Program Files (x86)
%USERPROFILE%\AppData\Local
%USERPROFILE%\AppData\Roaming
And of course either you x86 or standard Program Files directory off the local disk root.
If it's in any it might be in a folder label "Titan Network"
Uninstall (or just delete) any that you find, and re-install the newest version. I can't really tell what version of windows you are running, but from the look of that error prompt, I would guess Windows 2000/Windows Server... which might be your first problem. Anyways, if the above links don't work, your can use them to try and check you Application Data folder's correct path. I'm sure there are google articles on it.