Your .75 machine (the client) sends an "encrypted alert" message. If it does that, then this machine, at that point, believes that the connection is still up and running, and the server will be able to receive the alert message, and in particular decrypt it. Otherwise, what would be the point of sending that message ? Therefore, it is probable that the FIN message from the server has been sent after receiving this alert. Quite possibly, the client sends an alert which triggers the connection closure, and the server reacts by closing the transport medium (the FIN packet).
Note that in a normal handshake, the server will wait for reception of the
Finished message from the client (the "encrypted handshake message" after the
Change Cipher Spec) before sending its own
Change Cipher Spec and
Finished. We see that here, so the server was able to process the
Finished message from the client, including decryption, MAC verification and message contents.
Assuming that both implementations conform to the standard, the "encrypted alert" message is not a
close_notify warning. A
close_notify is an alert message which warns the recipient of the intention of the sender to gracefully terminate the connection. The recipient must then reply with a
close_notify of its own, marking its acceptance of that fact. Here, the client sends an alert message but no alert message is sent in response by the server, so we might surmise that we are not witnessing a graceful termination with a pair of
close_notify. Most plausibly, the client's alert is a fatal alert, which tells to the server that something is amiss, and that the connection is doomed. The server can then only close the transport medium because there is nothing else that it can do at that point.
There is no indication as to what bothered the client enough to make it send an alert; however, there are rather decisive indications that all cryptographic operations went well.
You may want to run two network captures on both systems, so that you may get precise timings for all packets; it helps in reconstructing the actual sequence of events.