I haven't read anything about the problem, but I just want to give you a hint:
M.loadFromFile("Resources\\Images\\Menus and Others\\PNG\\Stage 1 Screen Cover (Temporary).png");
Mask.loadFromFile("Resources\\Images\\Misc\\PNG\\Dione Background Pattern.png");
Image.loadFromFile("Resources\\Images\\Misc\\PNG\\Flora Background Pattern.png");
To keep it more crossplatform and easier to write, just you forward slashes instead of double backslashes.
M.loadFromFile("Resources/Images/Menus and Others/PNG/Stage 1 Screen Cover (Temporary).png");
Mask.loadFromFile("Resources/Images/Misc/PNG/Dione Background Pattern.png");
Image.loadFromFile("Resources/Images/Misc/PNG/Flora Background Pattern.png");
Windows can handle this without any problems.