Upgrading to 3.4.8 -- Not Recognizing Earlier Version

[Cath Messner]

I'm updating our IDP from a 3.4.6 version to 3.4.8. for the journey onto
4.0.1.

When './install.sh' on the 3.4.8 -- the following is triggered. If i
remember correctly,  the installation validates from a file if a
pre-existing version has been installed. We have shuffled some files around
-- could anyone remind me which path/file it validates if a previous
version is installed?


"[shib at idp bin]$ ./install.sh
Source (Distribution) Directory (press <enter> to accept default):
[/home/shib/shibboleth-identity-provider-3.4.8]

Installation Directory: [/opt/shibboleth-idp]

Hostname: [server1.example.com]

Backchannel PKCS12 Password:
Password cannot be zero length"


The 'idp_ant.log' output:

target: init
target: getsource
target: target-properties
target: target-nosrc-default
target: prompttarget
target: v2detect
target: checkproperties
target: gethostname
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