Pretty fair bet you are doing something wrong if others are saying they aren't having trouble. What are the exact
steps you are following? Do you get anything in the Chat window? Does the on-token damage macro work? For obvious reasons, I don't use this fw but your answers to these questions should allow others to give you a hand.
BTW, if it's "robust" then why did ianbleaker say "more than I'd like, honestly"? Are you using his fixed version?
... easy to use but still robust in its features.
I like to think this applies to the MPB as well. As for "simple"? Well, it's as simple or complex as you care to make it. That's up to you. I know you registered on my site but did you read this page
I downloaded the Framework from the OP, open up Maptools, click File > Open Campaign, select the newly downloaded campaign file and open. I get the default map and try to use an action on one of the tokens. I make sure it hits by giving it a +20 to hit, and see that the target token was not damaged.
Here is an image of the chat text showing a definite hit and damage, and the target token with full HP still -
I did register on your site and I looked around for a couple of minutes. I didn't read in-depth as you can tell by my last post, it was almost 2AM. I downloaded the "Full" version of Rumble's Framework but I will be giving yours another look through.