I copy the map wp-w3all-config that i can find in the plugin map wp-w3all-phpbb-integration -> addons to the plugins map in wp-content
You can see this in this picture. http://imgur.com/a/NFBlM
In this screen on the right my config.php from my phpbb forum directory. And on the left the config file : wp-content/plugins/wp-w3all-config/config.php file. I have taken al values over from my config.php file (phpbb).
And remove the // http://imgur.com/a/7S5Wb
i've got your problem.
It is a bug due to latest additions on 1.6.1> that happen if path is wrong set, and code is executed by the way: i see int his case you also should have not access to admin in this case. 1.6.4 will be released just after this post as soon is possible.
I am giving it another try. I have updated your plugin and at this time my dashboard from my Wordpress site is available.
This was before the update not possible.
Notice: Undefined variable: w3all_wlastopicspost_max in /sites/bakkersbaas.nl/www/wp-content/plugins/wp-w3all-phpbb-integration/wp_w3all.php on line 68 Warning: max(): When only one parameter is given, it must be an array in /sites/bakkersbaas.nl/www/wp-content/plugins/wp-w3all-phpbb-integration/wp_w3all.php on line 68
look, about this error on top, please re download now the plugin, and rewrite files wp_w3all.php and class.wp.w3all-phpbb.php that have been patched.