I have the same problem. I am just trying to run RealTemp, which gives me CPU temperatures. I started with an old version - 4 years ago, but updated to the latest version, and no joy. Avast insists that since this driver is "vulnerable", it won't load it, and I can't find anything else to substitute for it.
Anyone who has succeeded, please post a response. I am disappointed that Avast does not have any more info about this. Just saying that something is "vulnerable" is not a good explanation.