We just published new patch release for version 3.8 (3.8.267). Only server and web API are affected. Changes since release 3.8.262:

• Fixed server crash during scheduled task processing
• Fixed issues:
          NX-2009 (Add notification channel driver "Shell command")
          NX-2035 (Instance discovery using ICMP.Targets list crashes server)
          NX-2037 (Save IP address of client connecting via WebAPI to audit log)

Best regards,
Victor