I have created a custom field type which inherits directly from SPField but when I try to add the field to a list I get the following error:
One or more field types are not installed properly. Go to the list settings page to delete these fields. at Microsoft.SharePoint.Library.SPRequestInternalClass.AddField(String bstrUrl, String bstrListName, String bstrSchemaXml, Int32 grfAdd) at Microsoft.SharePoint.Library.SPRequest.AddField(String bstrUrl, String bstrListName, String bstrSchemaXml, Int32 grfAdd)
I have looked at the log file and there is no helpful information as to what is causing the problem and I have attached the debugger to the process and it exits after the base constructor for the field type has been called.
Does anyone know what could be going wrong from this error? Many thanks in advance.