MySQL two istances (1 reply)

I have already MySQL installed and running on port 3306. Now I have installed wamp and all it's services, so even new MySQL. To mantain both MySQL server, I changed my.ini of wamp server, by clicking on tray icon, setting wamp mysql server port to 3316. The problem is that wamp mysql won't start. MySql notifier, that i've installed with the first mysql server, has detected the new mysql service, but it also can't run, poping up a message saying it failed to change last status (or something similar).

Suggestions?