This is a known issue, and the only solution right now is to use the mobile version https://m.vk.com/ vk.com requires ES6-classes now, and it's hard to implement in KM-engine This was discussed in russian lang here: http://forum.geckoworld.ru/index.php/topic,243596.0.html (some tech. info on ES6-classes https://github.com/MoonchildProductions/Pale-Moon/issues/1243)
Forum: Bugs

For the people who still have XP SP2 and receive an error "GetLogicalProcessorInformation in library KERNEL32.dll...". You don't need SP3. All you need is to install this update: http://thehotfixshare.net/board/index.php?autocom=downloads&showfile=4175 Then that error won't bother you anymore.
Forum: Announcements

Hello everyone! New Russian KM user here. I understand that the future of this project is quite undetermined, but there is one thing that really worries me. Mozilla has announced not so long ago that it will discontinue XUL completely. Does someone here have any info about how it could affect XULRunner, on which KM is based on? Is it gonna be possible to embed KM interface in post-XUL Gecko?
Forum: Development