DevIL reading an invalid extension

Question

So I've been using the DevIL library for a while now (along with ILU and ILUT) and have had few problems with it after I got it working. That is, until now. All of a sudden it does not seem to work with any image of any format. I'm using this code:

GLuint myTex;

void Init() {
    myTex = ilutGLLoadImage(L"img.tga");
}
void Draw() {              // 2D Drawing
    glBindTexture(GL_TEXTURE_2D, myTex);
    draw::TwoD::Textured::Rectangle(100, 100, 200, 200);
}

The rectangle appears blank white. I checked the function and it seems like it should work fine, so I tried calling ilGetError(). It returned IL_INVALID_EXTENSION for nearly every different image I tried. I've tried putting the whole directory and even made sure that I was using the right version of DevIL (unicode) and still it returns this. Any idea what's going on?

Thanks in advance!

Edit:

I've also notices that DevIL returns this even if the file specified does not exist. This makes me think something is wrong with DevIL itself instead of my code.

Edit 2:

So I found out that I placed the unicode DLLs in the project directory (as necessary) but it turns out I linked to the library directories for multi-byte chars. Even after fixing it, the problem continued. I'm stumped by this one.

Edit 3:

Okay sorry for so many edits but I also just found out that the DevIL setup I had in my previous projects still work perfectly. It seems to only be the project I'm using now. All the relevant code is the same (copy/pasted), so I think it has to do with the project properties, but I can't find any differences. Do you know of any way to copy the properties of one project to another in VS2015?