Hi terryp,
Please try modify the code in "Flex slider – main slider"
replace the codes from:
... [wpv-if url='[types field="slider-main-image" output="raw" index="0"][/types]' evaluate="empty($url)"] ...
To:
... [wpv-if url="wpcf-slider-main-image" evaluate="!empty($url)"] ...
Same as above changes, you need modify the codes in the codes of "Flex slider nav – thumbnails code"
More help:
Checking for empty fields
https://wp-types.com/documentation/user-guides/conditional-html-output-in-views/#checking-for-empty-fields
