Hi
I had the same issue, it seems that the ldap search app requires java.
For me it was as easy as installing java on my systems. I am running Redhat so yum install java did the job for me.
So just check how to install java for your respective OS.
I found this in the http://docs.splunk.com/Documentation/ActiveDirectory/latest/DeployAD/ConfiguretheSA-ldapsearchsupportingaddon:
Important: The SA-ldapsearch supporting add-on for Active Directory requires the Java Standard Edition Runtime Environment version 1.7 or later. Make sure you have installed this Java runtime environment prior to installing the SA-ldapsearch supporting add-on.
Hope this help.
Cheers
C.
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