Hi, have just installed 1.6 on render nodes and desktop. First DR render went OK, but re-render says that there is a version mismatch (slave version: unknown (pre 1.3), master version:1.6)
I restarted the nodes (was difficult to get DR to close) and now rendering OK.
Using Max 2015 as master and the nodes have both Max 2013 and 2015.