Hi Maksym!
"invalid command name "ccClass\xc2\xa0create""
It seems to me that you managed to introduce a non-breaking space (nbsp), which appears as a space visually, but is not a space in the sense of Tcl's syntax def, i.e., as a separator between two Tcl words.
(This happens to me sometimes when I leave on my Mac Keyboard ALT pressed when hitting space.)
HTH, Stefan