Hi @seehowtwo
It sounds like the issue may be related to a corrupt serialized array.
Can you view teh database via phpMyAdmin and edit the row that contains the field object?
This row will be found in the wp_postmeta table, with a meta_name of ‘field_123’ where 123 is the field key. You can copy out the meta_value and check that the serialized array is correct.
Did you by chance have a url in the field settings? Perhaps as a default value or in the description? Then, did you do a search / replace when you moved servers? This would cause the issue described completely.
Thanks
E
