Workaround for boost uncaught exception problem on MacOS 10.5.

src/core/common/avatarmanager.cpp

@@ -515,10 +515,14 @@ bool
 AvatarManager::InternalReadDirectory(const std::string &dir, AvatarMap &avatars)
 {
 	bool retVal = true;
+	path tmpPath(dir);
+
+	if (exists(tmpPath) && is_directory(tmpPath))
+	{
 		try
 		{
 			// This method is not thread safe. Only call after locking the map.
-		directory_iterator i(dir);
+			directory_iterator i(tmpPath);
 			directory_iterator end;
 
 			while (i != end)
@@ -541,6 +545,12 @@ AvatarManager::InternalReadDirectory(const std::string &dir, AvatarMap &avatars)
 			LOG_ERROR("Exception caught when trying to scan avatar directory.");
 			retVal = false;
 		}
+	}
+	else
+	{
+		LOG_ERROR("Avatar directory does not exist.");
+		retVal = false;
+	}
 	return retVal;
 }