_get_show_details_link function (labels.php) is producing following string
[...] onclick="lifestream_toggle(this, '', '7', '7');return false;">7</a> [...]
The first parameter ($this->options['id']) is empty.
This causes items to remain hidden.
On another note, the plugin uses uniqid to generate object ID's.
Current code:
$id = uniqid('ls_', true);
result:
[...]id="ls_4a49e3167b6b33.34838862"[...]
Because if the period, the ID is not xhtml compliant.
To generate unique object id's without a period, switch more_entropy to false:
$id = uniqid('ls_', false);
result:
[...] id="ls_4a49e5c1a2951" [...]