do you have botweapons.cfg in your ivpbot folder?
dir c:\HLServer\cstrike\ivpbot
<botchats> (language conversions for botchat)
<docs> (readme and how-to text files)
<wptdefault> (waypoints folder)
botchat.txt
botlogos.cfg
botnames.txt
botskill.cfg
botweapons.cfg
ivpbot.cfg
ivpbot.dll
~you have all these files?