I'm fighting with some stupidly easy problem. I can't get passing and rendering texture by shader working. After passing existing, complete texture ( I tried dozens of them, loaded in various ways... always same effect ), and rendering it even with the easiest way on quad, I got solid color filled one. The funniest thing is, that the color is picked from the attached texture - usually from point (1,1) - in normalised coords.
Here's some more info and code fragment:

stackoverflow.com/questions/14186799/glsl-shader-passing-and-rendering-texture#comment19664636_14186799

Please... help! I try to fix it for a couple of days now! I need to have it workin as soon as possible... unfortunately :/
Thanks in advance for any ideas here.