I am having two consistent issues with launching World at War. They are:
1) Sometimes, it just simply doesn't work. It may take forever to load the title animation thing, or may just give me a black screen until I kill it via the Task Manager. Not very terrible, as a second load usually works, but still obnoxious.
2) Not only does Windows ask me if I'm OK with CoDWaW.exe making changes to my computer - something it's never done before - but the Steam Community/Steam Overlay does a whopping nothing and is no longer there.

Issue #1's always been a thing, but #2 began after completing the guide at http://ugx-mods.com/wiki/index.php?title=Modtools_Installation_Guide

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Double Post Merge: June 25, 2015, 06:06:19 pm

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UPDATE:
I fixed problem #2. For anyone who's having it, go to your root folder, right-click CoDWaW.exe, choose Properties, go to the Compatibility tab, and uncheck Run this program as an administrator. Click Apply and OK. You may need to do this after clicking Change settings for all users, as well.

have you launch them in admin and compability mode? microsoft.net framework is up to date?

verify your game content through steam

UPDATE:
I fixed problem #2. For anyone who's having it, go to your root folder, right-click CoDWaW.exe, choose Properties, go to the Compatibility tab, and uncheck Run this program as an administrator. Click Apply and OK. You may need to do this after clicking Change settings for all users, as well.

Are you sure you have Admin privileges? Shouldnt need to do that, maybe turn UAC control off instead