You can help us find what the cause of the issue is by running the following. Chances are it could be a module problem, or an issue with core.
The following steps will create a backtrace of the problem, so we can tell which piece of code is causing the problem:
1) Instead of starting services with the usual command, start them with: gdb services
2) Let Anope load and connect to your IRC Server.
3) Perform the command or action that made Anope crash
4) At the gdb prompt in the shell, type bt
5) Paste the results of the bt, plus the last few lines from the log above, into this thread.
We should then be able to tell you whereabouts the problem lies