I'm using Sitefinity 4.1.1405.0. I'm creating an Event using the fluent API and one of my custom fields on Events contains taxa. I previously persisted this data as IEnumerable<Guid>, but after upgrading, this is now throwing the exception "Object must implement IConvertible".
Here is the code I'm using to persist the taxa metadata:
IEnumerable<Guid> taxa = GetSelectedTaxa();
The metadata field contains flat taxa. Which data type should be used for persistence?