It's not listed as compatible with 6.x, but it has been installed on multiple 6.x instances. For more information you might want to contact developer Peter Schlampp.
I'm trying to install on Splunk 6.2 and I get the error when I click the event action: "Invalid view name requested: "%solera%". View names may only contain alphanumeric characters." Did you have to make any config changes to get it working on 6.x?
