I just updated MiKTeX (64bit, Win7) today and encountered the error that the new biblatex 3.6 and the older biber 2.5 don't match (they both came with my fresh MiKTeX 2.9 installation this morning). I've tried several approaches, including
- downgrading biblatex to 3.5 (doesn't work for me),
- installing biber in cygwin (doesn't work for me either -- cygwin still has the old biber 2.5 in its mirrors). I ended up with
- downloading biber 2.6 windows binaries from sourceforge, which finally worked.
I needed to use this version:
I renamed it bibernew.exe and put it into my miktex installation here:
C:\Program Files\MiKTeX 2.9\miktex\bin\x64
I still have to figure out how to tell arara to use it. Is there a better way to deal with this version incompatibility?