Hi,
did you check this PHP lines? (42th line in \modules\mod_flexible_vm_carousel\tmpl\default.php)
It is;
$FlexibleCarouselUniqueID = uniqid(FlexibleCarousel);
It lets the generate Unique DIV id in order to load multiple module in a single page. Uniqid is very basic PHP function, i don't know how your server doesn't support it. (
php.net/manual/en/function.uniqid.php)
But; if you are not planing to load multiple carousel modules in a single page, then you won't need this function and you can change this 42th line:
$FlexibleCarouselUniqueID = uniqid(FlexibleCarousel);
to
$FlexibleCarouselUniqueID = "flexibleCarouselConstantID";
You won't see the error message.