if the installation is correct, and there is no new updates in steam servers, then:
try an older version of podbot, if you installed a new beta version.
check with other versions of metamod (try to avoid the -P version).
(etc.) something directly related to the bots and metamod, and not related to new HLDS versions. cause I tested them some times ago with the same current versions.
thanks mate i just figured it out... was a conflict with one of my loaded plugins error after bots joined.
all fixed now.