http://bugs.winehq.org/show_bug.cgi?id=14197
--- Comment #4 from Hans Leidekker hans@it.vu.nl 2008-07-05 12:41:58 --- I can't reproduce this on current git and a clean wine prefix. The installer triggered a gecko download and install but once that finished the main window showed up fine.
$ sha1sum NosTale_UK_20080611.exe 5291dbb184a00dcd948d9137794bc23799a2fc0a NosTale_UK_20080611.exe