After removing those lines I get these errors when starting Splunk which is similar to the error the other person got. My setup is single instance for testing so no cluster.
Invalid key in stanza [threatlist://minemeld_ipv4threatlist] in C:\Program Files\Splunk\etc\apps\Splunk_TA_paloalto\default\inputs.conf, line 23: description (value: MineMeld IPv4 threatlist indicators for Splunk ES).
Invalid key in stanza [threatlist://minemeld_ipv4threatlist] in C:\Program Files\Splunk\etc\apps\Splunk_TA_paloalto\default\inputs.conf, line 26: type (value: threatlist).
Invalid key in stanza [threatlist://minemeld_ipv4threatlist] in C:\Program Files\Splunk\etc\apps\Splunk_TA_paloalto\default\inputs.conf, line 27: url (value: lookup://minemeld_ipv4threatlist).
Invalid key in stanza [threatlist://minemeld_domainthreatlist] in C:\Program Files\Splunk\etc\apps\Splunk_TA_paloalto\default\inputs.conf, line 30: description (value: MineMeld Domain threatlist indicators for Splunk ES).
Invalid key in stanza [threatlist://minemeld_domainthreatlist] in C:\Program Files\Splunk\etc\apps\Splunk_TA_paloalto\default\inputs.conf, line 33: type (value: threatlist).
Invalid key in stanza [threatlist://minemeld_domainthreatlist] in C:\Program Files\Splunk\etc\apps\Splunk_TA_paloalto\default\inputs.conf, line 34: url (value: lookup://minemeld_domainthreatlist).
Invalid key in stanza [threatlist://minemeld_urlthreatlist] in C:\Program Files\Splunk\etc\apps\Splunk_TA_paloalto\default\inputs.conf, line 37: description (value: MineMeld URL threatlist indicators for Splunk ES).
Invalid key in stanza [threatlist://minemeld_urlthreatlist] in C:\Program Files\Splunk\etc\apps\Splunk_TA_paloalto\default\inputs.conf, line 40: type (value: threatlist).
Invalid key in stanza [threatlist://minemeld_urlthreatlist] in C:\Program Files\Splunk\etc\apps\Splunk_TA_paloalto\default\inputs.conf, line 41: url (value: lookup://minemeld_urlthreatlist).
Invalid key in stanza [threatlist://minemeld_filethreatlist] in C:\Program Files\Splunk\etc\apps\Splunk_TA_paloalto\default\inputs.conf, line 44: description (value: MineMeld file threatlist indicators for Splunk ES).
Invalid key in stanza [threatlist://minemeld_filethreatlist] in C:\Program Files\Splunk\etc\apps\Splunk_TA_paloalto\default\inputs.conf, line 47: type (value: threatlist).
Invalid key in stanza [threatlist://minemeld_filethreatlist] in C:\Program Files\Splunk\etc\apps\Splunk_TA_paloalto\default\inputs.conf, line 48: url (value: lookup://minemeld_filethreatlist).
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