Thanks for your question
please download the file Here https://drive.google.com/file/d/0B0UMn4ezbQ6UcFpqa2FDaXF0YWc/view?usp=sharing
You can extract all file in ves_customattribute.zip to web root, clear cache & reload page.
if It’s not working , Please provide me information your site & you could explain steps by steps to replicate the problem and provide us some screenshots. , i will help you check and let you know solution.
Thanks and have a nice day!
Answer for Source model "ves_customattribute/selectoptions" not found for attribute "stylelayout"