Un little bug with Thunar, version 1.2.1-2 in Archlinux. thunar: symbol lookup error: /usr/lib/libstdc++.so.6: undefined symbol: _ZNSt14error_categoryD2Ev, version GLIBCXX_3.4.15. This bug is not critical, thunar is usable.
This is a bug in the system libraries of Archlinux, not a Thunar bug.