Aha, thanks
I changed it from:
anope_cmd_privmsg(s_HelpServ, operchan, "ATTENTION! Help is needed in %s! User: %s", ci->name, argv[1]);
To:
anope_cmd_global(s_HelpServ, "ATTENTION! Help is needed in %s! Requested by %s", ci->name, argv[1]);
HelpServ: ATTENTION! Help is needed in #geek! Requested by William
Seems to have worked, and didn't crash Anope!