Internal error 3 during Client Installation Netbackup v 7.6.1

Hi all,

I have a problem with client installation on Windows 2008R2 SERVER 64bit in MS Cluster, The installation Client Netbackup 7.6.1 abort with internal error 3, I tried with this workarounds but never has changed.

I have the some issue

this is error on logs:

08-26-2015,10:47:13 :  Could not open NetBackup\CurrentVersion install key.  NetBackup not installed.  No need to proceed with remaining logic.

08-26-2015,10:47:24 :  DEBUG: Error 2738:  Could not access VBScript runtime for custom action
08-26-2015,10:47:24 :  ERROR: Internal Error 2738.
08-26-2015,10:47:24 :  Action ended 10:47:24: setRegistryValues.B2D5B6C9_4698_42F7_AC9D_955789A69556. Return value 3.
08-26-2015,10:47:24 :  Action ended 10:47:24: INSTALL. Return value 3.

Could you help me please

Best regards

Rick