May I assume that you use the official Steam CS 1.6, and that you have only Metamod and PODBot mm installed right now, and that CS runs perfectly without the bot? Sorry if this question annoys you, but we had the oddest stories here and I just want to make sure that the basic things are clear before we dig deeper.
Did you try removing the bot from Metamod and starting CS with Metamod alone? It might be interesting to know if Metamod alone can cause crashes, or if the crashes start as soon as you start the bot.
Another question: How did you install the bot? New installation from scratch, or did you overwrite some older PODBot (maybe pre-mm) version with the latest dll? I'm asking because if you use a very old botweapons.cfg, for example, together with the bot dll, crashes can occur.