A final version of patch 1.60 was released by Bohemia Interactive yesterday. While you will still be able to enter servers with an older version of a beta patch we'd like to encourage everybody to apply the patch as soon as possible.
If you replaced praa.exe with the one from this thread you will need to revert to the original. If you do not have a backup, fear not, you can download it below (as before, praa_xp.zip is intended for those running on Windows XP or 2000).