Hello there! I am having some problems with TnT on my 1.6.4 server. It explodes, but it doesn't damage the player. I have gone through all my plugins to disable/enable what is needed for it to work but it doesn't appear to be working. I have attached a picture with all the plugins that are currently on my server.
With essentials, there might be a feature to do so, but are are you using any flags that may prevent the player from getting damaged with worldguard?