When i start the NewGen WE, the Grimoire menus never appear, or only appear the first time that i start NewGen. The WE acts like a completely unmodded, normal WE, what's wrong?
Make sure you have patched your Warcraft installation to version 1.21.
Make sure you're not using a cracked WE. Mount the TFT mini image in daemon tools instead of using a crack if you must. Although some people have successfully used NewGen with a cracked WE it is not recommended.
If you're using Vista, try it under Windows XP, maybe it's a Vista problem.
A virus might be the root of the problem too, make sure your computer is clean.
Finally anti-virus, anti-spyware and firewall software can be causing the problem by blocking the changes that Grimoire makes to the WE. Try disabling such software temporarily.