If you use the ticket system, the support is outstanding. Forum support is sketchy, but you may get lucky and find an existing answer to your question.
My only quibble so far is the undocumented features such as the event triggers. I was very upset at first because I thought I had to use the built in edit boxes to perform additional form processing, but when I looked at some plugins, I noticed that the component did use the Joomla! event system.
Also, maybe the optional Google Map plugin is changed, because This K2 extra Fields plugin gives an error message saying that the Google map plugin is not installed (even though it is installed and enabled). The problem is that this plugin is looking for the Google map plugin in the content directory when it is actually in the system directory.
Since there is no forum, hopefully this may helps someone else that has this issue.
I tried to register on the site forum to add my comments but kept getting an error message about unable to open socket.
The major problem I had, which others also reported is that if you have a strong '.htaccess' file (like the kind described in Nikolas' 'It takes a Ninja to Kill a Ninja' in the Joomla! Magazine, then this component wont work. It seems the component needs access to some files that would normally be locked out via a strong .htaccess file. You get an OS error message saying you don't have permission to access a file no matter what you set the permissions to.
Hopefully the developer can take a look at that story in the magazine and come up with an override that will allow this component to work with that type of .htaccess file.
The issue I have is with the cron job. I just cant seem to get it working (I get errors on argc and argv variables). I'm trying to contact the developer, but no luck yet.
4 of 5 stars so far