It works completely fine for me, I clicked a star and it all went through with no errors, and I even made a new comment straight afterwards.
Try disabling JoomlaComment plugin and testing again. Also try using the modern template in JoomlaComment if you are not already as it is the most compatible.
I don't know why some users on Extension page report it not working with JoomlaComment. Maybe they have an old version of Joomla or old version of JoomlaComment, I really don't know.
But I also have hacked my own Joomla 1.5.14 MooTools library, because there is a bug in there for IE7/8.
- Line 2148 changed from...
this.style[property] = value;
...to...
try {
this.style[property] = value;}
catch(e) { // alert(this.className + ':'+property+'='+value)
}
...which fixes IE7/IE8 MooTools bugs on the fancy sliding menu's for some templates.
...it might be a different Line than 2148 depending on the version of Joomla you have. And I have no idea if this will fix it, but it's the only "core hack" I have on my local Joomla dev site which has JoomlaComment and VOTItaly working fine. Everything else is standard.
Also try
completely switching your Joomla theme to ja_purity or another Joomla default. If you find that it's solved after that, you will need to take this up with RocketTheme because we don't have a subscription and from what I'm told, they pretty much ignore everyone who contacts them to try and work together to fix conflicts with their templates.