util.cpp:622: error: operands to ?: have different types 'wxString' and 'const wxChar*'
I don't really understand the syntax here with all the << stuff (never seen it before), but it appears to me that Xcode doesn't like the fact that there are two of these operations in the same line with different data types. Either that or "categ" is of type wxString and _("Split") is of a different type, because I am pretty sure that wxT(":") and wxT("") are both of type wxChar.