Resuming:
Yes I know the most likely error is mine, not C::B fault (neither SFML's fault), but nonetheless, it puzzless me.
It's only a minimal test code with creation of window waiting to be closed with the minimal content, nothing more.
Nor it uses any external file other that the own *.dll's
I am thinking about the targets, it's the first time I code with that debug/release dichotomy
run it from shell --> no, it's GUI application
Also checked in "Build options...", dont touch Compiler Flags...or only the same checks for Release as Debug, in Linker settings>Link libraries ensure that the *.a's are in correct order (first graphics, then window, last system). Also in both options of Search directories (Compiler + Linker), ensure correct paths.
Maybe I missed something related to the possibility of static version?
Many thanks!