CAX1MENU library member causes IPT (Data Set Commander) init error

Products

• ACF2
• ACF2 - DB2 Option
• ACF2 for zVM
• ACF2 - z/OS
• ACF2 - MISC

Issue/Introduction

IPT (Data Set Commander) is experiencing a failure in CAX1MENU library member causing init error initialization.  

Message received ; IQIM100 - READ Unexpected error accessing 'ISPMLIB' library RC = 0002
Fails to get into ISPF .

Environment

Release:
Component: ACF2MS

Resolution

CAX1MENU needs to be a FIXED block member.  If the library was changed to VB, this error happens.