[KaCaT]

If you are using IvPBot on Steam CS version, check if there is a mp.dll file in your cstrike\dlls folder. If the file does not exist, open your liblist.gam with notepad (make sure you remove the Read-Only attribute for now)

Change this line:
gamedll "ivpbot\ivpbot.dll"
to:
gamedll "dlls\mp.dll"

Save the file, then start CS, create a new game, then quit the game when it's just created. After that, open liblist.gam again with notepad, change gamedll "dlls\mp.dll" back to gamedll "ivpbot\ivpbot.dll". Save the file, and try to start the game and see if it works or not.