Error message by using campains

On Page "Edit Simple Ad ..." I get error after enabling campaigns module:

Notice: Undefined index: #value in simpleads_campaigns_form_alter() (line 62 of /.../html/sites/all/modules/simpleads/modules/simpleads_campaigns/simpleads_campaigns.module).

Suggest to replace

$lang = $form['language']['#value'];

by this

$lang = array_key_exists( '#value', $form['language'] ) ? $form['language']['#value'] : $form['language']['#default_value'];

At least this works for me. Didn't go deeper into specifics of this data structure.