invalid build file name format while upgrading VPX on SDX to 12.0

Problem Cause

NetScaler SDX Appliance

• Upgrading a NetScaler instance to release 12.0 by using the SDX Management Service GUI fails if any of the following conditions are met:
  - the Management Service version is 11.1-55.x or earlier.
  - the Management Service version is any version of 11.0 or 10.5.
  This is because the NetScaler image file name format has changed in NetScaler release 12.0.
  The new name and the equivalent old name file format of the NetScaler image file are listed below:
  - New file name format: build-12.0-53.13_nc_32.tgz
  - Old file name format: build-12.0-53.13_nc.tgz