Uv/Image Editor doesn't edit my texture I was trying to add a texture to a cube in Cycles render. I added the texture, it showed up, and could render as well. However, there were some faces which I needed to edit. So, I unwrapped the object and went to the UV/Image Editor. But when I tried to scale or rotate my map, didn't affect to the texture. I'm using Blender 2.77.

In some projects it works and some it doesn't.

I described the issue in a video.
You use "Texture coordinates" -> "Generated". You need to switch it to "UV" for use your UVMap.