I am using the latest versions of NX on my Debian Linux machines and Windows (8.1 and 10). All is well with my Debian wheezy machine from all clients both Linux and windows. When I moved to Jessie as host, I was able to log in once or twice but then only got a black screen on the remote clients from a Jessie host. The host indicates that I’m logged in but my client screen remains black. When I try to log into the Jessie host using the localhost client on that same machine then I get the same black screen. I have two Jessie servers (64-bit), completely different machines, and they both give the same results. Before moving to Jessie, I have had great success with NX 4 and 5. The Jessie servers seems to be the problem.
Please let me know if you need more information beyond the files attached. Many thanks in advance.