ty! That worked.
In case it helps others, here is the old and new code:
OLD CODE:
// Company Logo OLD CODE DEPRECATED PLUPLOAD_IMAGE
// array(
// 'name' => __( 'Company Logo', 'person_stuff_' ),
// 'id' => "{$prefix}companyImage",
// 'type' => 'plupload_image',
// 'max_file_uploads' => 1,
// ),
NEW CODE:
// Company Logo
array(
'id' => '{$prefix}companyImage',
'name' => 'Company Logo', 'person_stuff_',
'type' => 'image_upload',
// Delete file from Media Library when remove it from post meta?
// Note: it might affect other posts if you use same file for multiple posts
'force_delete' => false,
// Maximum file uploads.
'max_file_uploads' => 1,
// Image size that displays in the edit page.
'image_size' => 'thumbnail',
),
