Minecraft staling when appling a new GUI pack

When I apply a new GUI, in this case, the CORE GUI that I downloaded from www.MCPEDL.com

when applying it it stalls or crashes OR REPORTS ERRORS LIKE "expected variable not given of $aple tv" or "child controls doesn't have unique names" another example in the MCPE optimize it reports error all the time I have login image and the pack to show you that error.

Thank you and please fix