some backtrace:
#0 0x321a6c9 wxStringBase::append(unsigned int, wchar_t) () (\wxWidgets-2.8.12\lib\gcc_dll\wxmsw28u_gcc_custom.dll:??)
#1 0x35de25d wxString::operator<<(wchar_t) () (\wxWidgets-2.8.12\lib\gcc_dll\wxmsw28u_gcc_custom.dll:??)
#2 0x31f3ee6 wxFileName::GetPathSeparators(wxPathFormat) () (\wxWidgets-2.8.12\lib\gcc_dll\wxmsw28u_gcc_custom.dll:??)
#3 0x3596ea8 wxFileName::GetPathSeparator(wxPathFormat) () (\wxWidgets-2.8.12\lib\gcc_dll\wxmsw28u_gcc_custom.dll:??)
#4 0x31f431e wxFileName::GetPath(int, wxPathFormat) const() (\wxWidgets-2.8.12\lib\gcc_dll\wxmsw28u_gcc_custom.dll:??)
#5 0x31f4826 wxFileName::GetFullPath(wxPathFormat) const() (\wxWidgets-2.8.12\lib\gcc_dll\wxmsw28u_gcc_custom.dll:??)
#6 0x61aeccaa cbWorkspace::GetFilename(this=0x56ae968) (/codeblocks_sf/src/include/cbworkspace.h:62)
#7 0x61882d91 MacrosManager::ClearProjectKeys(this=0xd28ce80) (\codeblocks_sf\src\sdk\macrosmanager.cpp:155)
#8 0x61883ec0 MacrosManager::RecalcVars(this=0xd28ce80, project=0x0, editor=0x1abe4450, target=0x0) (\codeblocks_sf\src\sdk\macrosmanager.cpp:253)
#9 0x61888c0f MacrosManager::ReplaceMacros(this=0xd28ce80, buffer=..., target=0x0, subrequest=false) (\codeblocks_sf\src\sdk\macrosmanager.cpp:459)
#10 0x6a708bb9 nsEnvVars::EnvvarApply(key=..., value=...) (\codeblocks_sf\src\plugins\contrib\envvars\envvars_common.cpp:409)
#11 0x6a706398 EnvVarsConfigDlg::OnSetEnvVarsClick(this=0x1abfeca0) (\codeblocks_sf\src\plugins\contrib\envvars\envvars_cfgdlg.cpp:637)
#12 0x31d1261 wxAppConsole::HandleEvent(wxEvtHandler*, void (wxEvtHandler::*)(wxEvent&) (wxWidgets-2.8.12\lib\gcc_dll\wxmsw28u_gcc_custom.dll:??)
#13 0x325436e wxEvtHandler::ProcessEventIfMatches(wxEventTableEntryBase const&, wxEvtHandler*, wxEvent&) () (\wxWidgets-2.8.12\lib\gcc_dll\wxmsw28u_gcc_custom.dll:??)
#14 0x325443a wxEventHashTable::HandleEvent(wxEvent&, wxEvtHandler*) () (\wxWidgets-2.8.12\lib\gcc_dll\wxmsw28u_gcc_custom.dll:??)
#15 0x3254895 wxEvtHandler::ProcessEvent(wxEvent&) () (\wxWidgets-2.8.12\lib\gcc_dll\wxmsw28u_gcc_custom.dll:??)
#16 0x33638f2 wxWindowBase::TryParent(wxEvent&) () (\wxWidgets-2.8.12\lib\gcc_dll\wxmsw28u_gcc_custom.dll:??)
#17 0x32ad5ce wxButton::SendClickEvent() () (\wxWidgets-2.8.12\lib\gcc_dll\wxmsw28u_gcc_custom.dll:??)
#18 0x32ad661 wxButton::MSWCommand(unsigned int, unsigned short) () (\wxWidgets-2.8.12\lib\gcc_dll\wxmsw28u_gcc_custom.dll:??)
#19 0x361f930 print_state() (\wxWidgets-2.8.12\lib\gcc_dll\wxmsw28u_gcc_custom.dll:??)
#20 ?? ?? () (??:??)