I read a line from a file:
KatalogObrazków 1 32
Means that I should look for data in:
C:\\Users\\NAME_OF_THE_USER/KatalogObrazkó
You may have encountered the UTF-BOM at the beginning of your file.
http://en.wikipedia.org/wiki/Byte_order_mark
It's invisible because most editors hide it. Pretty evil, huh?