First of all, yes, you must put Hexen wad in there, secondly, there's a chance that one of the pk3 archives is corrupted. I don't know why, but I had this 2 times already when downloading KA internal beta from our server.
So, first of all check if you -
1. Have Hexen.wad version 1.1 in same folder.
2. Run Karena.exe or Kalaunch.exe (and not just vavoom.exe).
If game still do not run, try following:
- download this patch: <!-- m --><a class="postlink" href="http://downloads.orcishweb.com/koraxdev/arena/KArena_20081112patch3.zip">http://downloads.orcishweb.com/koraxdev ... patch3.zip</a><!-- m -->
- unzip it just in the main KA folder (with "keep subfolders" (or whatever it is called in english <!-- s:) --><img src="{SMILIES_PATH}/orc2.gif" alt=":)" title="Smile" /><!-- s:) --> ) checked: archive has correct directory structure inside).
- You will be asked to confirm overwriting "basepak.pk3". Say yes.
Try running the game...
Also that internal release has some serious bugs like crashes in CTF and Football modes, so take care. I hope you would be able download new internal release we are preparing now.