I’m currently running php bridge as well. Could that be the problem?
It certainly sounds like that is the problem. Your using two plugins that are attempting to do the same thing.
I noticed the area where you set up the automated user integration is a bit broken. The red squares and blue circles are out of place, like something is being called at the wrong time in the PHP or CSS. (I don’t actually know, I’m not very good at either of those things.) Is anyone else experiencing that problem as well?
Upon you mentioning it, I notice this as well on my installation. As I already had integration configured everything still seems to be functioning properly, just not displaying. I haven’t tried this but the read me file suggests deleting the cache file in the wp-contents/plugins/wp_united/cache/ when upgrading versions of the plugin or wordpress.
For someone trying to set it up I might suggest backing up all your stuff, downloading and installing WordPress 3.5.2 and setting up your wp_united plugin there and then once your happy with it upgrade to 3.6.
When I upload, I keep getting the following error:
Can you be a little more specific as to what you have done and what your still trying to do. Have you successfully run the WordPress wp_united installer? Also, are you using a style other than prosilver or subsilver (the phpbb3 plugin has additional instructions included if your using subsilver theme) on your PHPBB3? If you are you need to make any theme related changes to the theme you are using.