http://bugs.winehq.org/show_bug.cgi?id=28795
--- Comment #3 from Bruno Jesus 00cpxxx@gmail.com 2013-02-19 22:02:42 CST --- A similar bug that had problems with %gs was fixed recently by http://source.winehq.org/git/wine.git/commitdiff/64ddb263d25dfceeeae8457a013...
Maybe this patch helps here too?