I have been very busy on other projects. I will see if I can release a maintenance release though sometime in the near future.
I do not have the phpBB 3.x installed right now, but based on the error you provided, you can try replacing the function "function parse_Smilies(&$text)" in phpBB with the following:
PHP Code:
function parse_Smilies(&$text)
{
$text = str_replace("{SMILIES_PATH}", $this->CONF['url'] . "images/smilies", $text);
}
Based on what you posted, it appears that phpBB now includes the image html code itself in the forum post.