Hi,
Just to let you know that I have upgraded the version of Octave used for Dynare on Windows. It is now 3.8.1. The installer can be downloaded there:
http://www.dynare.org/download/octave/windows/
If you compile from Cygwin, you'll also have to reinstall the files dynare-mingw32-libs.zip and dynare-mingw64-libs.zip.
Tomorrow's Dynare snapshot will be built against Octave 3.8.1. Same for the upcoming Dynare 4.4.3 release.