http://bugs.winehq.org/show_bug.cgi?id=23865
--- Comment #3 from Michael Mc Donnell michael@mcdonnell.dk 2012-06-12 14:40:38 CDT --- I have tracked the issue down to openFile in kernel32. It does not support file names ending in dot. It seems like filenames ending in dot are forbidden on Windows, but it is still possible to create them, e.g. with "notepad sherry.", and they can be opened with openFile on Windows.
There was a test patch [1] submitted once but it was never accepted.
[1] http://www.winehq.org/pipermail/wine-patches/2004-May/011036.html