Error GLSL incorrect version 450 - c++

Question

I have a certain OpenGL application which I compiled in the past but now can't in the same machine. The problem seems to be in the fragment shader not compiling properly.
I'm using:
Glew 2.1.0
Glfw 3.2.1
Also all necessary context is being created on the beginning of the program. Here's how my program creation function looks like:
std::string vSource, fSource;
try
{
vSource = getSource(vertexShader, "vert");
fSource = getSource(fragmentShader, "frag");
}
catch (std::runtime_error& e)
{
std::cout << e.what() << std::endl;
}
GLuint vsID, fsID;
try
{
vsID = compileShader(vSource.c_str(), GL_VERTEX_SHADER); //Source char* was checked and looking good
fsID = compileShader(fSource.c_str(), GL_FRAGMENT_SHADER);
}
catch (std::runtime_error& e)
{
std::cout << e.what() << std::endl; //incorrect glsl version 450 thrown here
}
GLuint programID;
try
{
programID = createProgram(vsID, fsID); //Debugging fails here
}
catch (std::runtime_error& e)
{
std::cout << e.what() << std::endl;
}
glDeleteShader(vsID);
glDeleteShader(fsID);
return programID;
My main:
/* ---------------------------- */
/* OPENGL CONTEXT SET WITH GLEW */
/* ---------------------------- */
static bool contextFlag = initializer::createContext(vmath::uvec2(1280, 720), "mWs", window);
std::thread* checkerThread = new std::thread(initializer::checkContext, contextFlag);
/* --------------------------------- */
/* STATIC STATE SINGLETON DEFINITION */
/* --------------------------------- */
Playing Playing::playingState; //Failing comes from here which tries to create a program
/* ---- */
/* MAIN */
/* ---- */
int main(int argc, char** argv)
{
checkerThread->join();
delete checkerThread;
Application* app = new Application();
...
return 0;
}
Here is the looking of an example of the fragmentShader file:
#version 450 core
out vec4 fColor;
void main()
{
fColor = vec4(0.5, 0.4, 0.8, 1.0);
}
And this is what I catch as errors:
[Engine] Glew initialized! Using version: 2.1.0
[CheckerThread] Glew state flagged as correct! Proceeding to mainthread!
Error compiling shader: ERROR: 0:1: '' : incorrect GLSL version: 450
ERROR: 0:7: 'fColor' : undeclared identifier
ERROR: 0:7: 'assign' : cannot convert from 'const 4-component vector of float' to 'float'
My specs are the following:
Intel HD 4000
Nvidia GeForce 840M
I shall state that I compiled shaders in this same machine before. I can't do it anymore after a disk format. However, every driver is updated.

Answer 1

As stated in comments the problem seemed to be with a faulty option of running the IDE with selected graphics card. As windows defaults the integrated Intel HD 4000 card, switching the NVIDIA card to the default preferred one by the OS fixed the problem.