Since the new upgrade Fields no opening

Since your new upgrade I notice I can no longer edit the year of the album anymore along with a couple other fields
Why does the software shut those fields off now?

It could be that the settings to read and write tags are not as they were before (and you have changed the installation mode from standard to portable or the other way round).
See Tools>Options>Tags>Mpeg
esp. the settings for APE tags. The best would be only to delete them.