2 posts_carousel items in one post not working

Hi,
I want to use to post carousels in one post. The second carousel doesn’t work though. Can I make this happen somehow?

[posts_carousel heading="7 Scrumptious Kids Breakfast Recipes" post_type="post" category_slug="breakfast" order_by="date" order="ASC" limit="10" meta="yes" excerpt="yes" excerpt_char_limit="64" exclude_current="yes" width="four columns" scroll_by="4"][/posts_carousel]

[posts_carousel heading="8 Delicious Kids Snack Recipes" post_type="post" category_slug="snacks" order_by="date" order="ASC" limit="10" meta="yes" excerpt="yes" excerpt_char_limit="64" exclude_current="yes" width="four columns" scroll_by="3"][/posts_carousel]

When I add these to a post the second carousel doesn’t render – it only lists all the posts in the selected category.