Revision r13541 (https://sourceforge.net/p/codeblocks/code/13541/) added some wx3.2 font styles that are not present in wx3.0, but we still support 3.0 (at least on Linux). These values must be guarded with wxCHECK_VERSION(3, 1, 2) in wxssimplefonteditordlg.cpp:
wxFONTWEIGHT_THIN
wxFONTWEIGHT_EXTRALIGHT
wxFONTWEIGHT_MEDIUM
wxFONTWEIGHT_SEMIBOLD
wxFONTWEIGHT_EXTRABOLD
wxFONTWEIGHT_HEAVY
wxFONTWEIGHT_EXTRAHEAVY
wxFONTWEIGHT_INVALID