I'm having problems when deploying a solution that creates several custom columns, for the content types I need to use. As it turned out I needed a couple custom field types for my application.
The custom field types "work as intended"(until now I have no reason to think otherwise at least) in that the projects deploy without error and everything seems to function normally when used form the sharepoint front-end.
The real problem I have is that when I try to define custom columns from XML using the custom field types I defined, deployed and use everytime, it just doesn't happen. I get an error:
Error occurred in deployment step 'Activate Features': Field type Tag_Field is not installed properly. Go to the list settings page to delete this field.
This happens when I try to define a column that uses the custom field type. When commenting/removing the column that attmepts to use the custom field type evrything runs fine.
Thank you for the help.