www.kvraudio.com/news/toontrack-updates-superior-drummer-to-v2-4-3-29737
1st May 2015
Toontrack has updated Superior Drummer to v2.4.3. This update is recommended to all users and is necessary for compatibility with all SDXs and EZXs expansion packs released from this point forward.
Fixed in version 2.4.3:
KVR Audio, Inc.
www.kvraudio.com