One issue I picked up with iCrew LITE, when you edit your own profile - you get an error saying the email address is not filled in (while it is), and your custom data fields also don't insert into the database. Both fixes are listed below:
In profile_edit.php:
Change:
<input type="text" class="form-control" value="<?php echo $userinfo->email;?>">
to:
<input type="text" name="email" class="form-control" value="<?php echo $userinfo->email;?>">
and, further down in the same file,
Change:
echo '<input type="text" class=" name="'.$field->fieldname.'" value="'.$field->value.'" />';
to:
echo '<input type="text" name="'.$field->fieldname.'" value="'.$field->value.'" />';