Not quite working on Linux Mint

[jml 50]

Followed the instructions in the Beta Troubleshooting Guide, etc.. synergyd starts in a terminal window. After opening the Synergy app, I get a pretty blue window with the Synergy logo. The rest of the window's blank save for a version identifier (Synergy 2.0.0-beta4) and a do-not-redistribute message. When the window opens, the log indicates:

[wamp_message_processor.cpp:47][process_message] processing message: hello
[wamp_router_impl.cpp:108][attach_session] attaching session: session [6404284456041962,default,none]
[wamp_dealer.cpp:65][attach_session] attach session: session [6404284456041962,default,none]
[wamp_broker.cpp:51][attach_session] attach session: session [6404284456041962,default,none]
[wamp_router_impl.cpp:164][process_hello_message] session [6404284456041962,default,none], hello [default, {"authid":"", "authmethods":[], "roles":{"subscriber":{}, "callee":{"features":{"call_timeout":true}}, "publisher":{}, "caller":{"features":{"call_timeout":true}}}}]
[wamp_router_impl.cpp:192][process_hello_message] session [6404284456041962,default,open], welcome [6404284456041962, {"roles":{"dealer":{"features":{"call_timeout":true, "progressive_call_results":true}}, "broker":{}}}]
[rawsocket_transport.cpp:39][send_message] sending message: welcome
[wamp_message_processor.cpp:47][process_message] processing message: subscribe
[wamp_broker.cpp:171][process_subscribe_message] session [6404284456041962,default,open], subscribe [1, {}, synergy.core.log]
[wamp_broker.cpp:201][process_subscribe_message] session [6404284456041962,default,open], subscribed [1, 6]
[rawsocket_transport.cpp:39][send_message] sending message: subscribed
[wamp_message_processor.cpp:47][process_message] processing message: subscribe
[wamp_broker.cpp:171][process_subscribe_message] session [6404284456041962,default,open], subscribe [2, {}, synergy.service.log]
[wamp_broker.cpp:201][process_subscribe_message] session [6404284456041962,default,open], subscribed [2, 7]
[rawsocket_transport.cpp:39][send_message] sending message: subscribed
[wamp_message_processor.cpp:47][process_message] processing message: subscribe
[wamp_broker.cpp:171][process_subscribe_message] session [6404284456041962,default,open], subscribe [3, {}, synergy.screen.status]
[wamp_broker.cpp:201][process_subscribe_message] session [6404284456041962,default,open], subscribed [3, 8]
[rawsocket_transport.cpp:39][send_message] sending message: subscribed
[wamp_message_processor.cpp:47][process_message] processing message: subscribe
[wamp_broker.cpp:171][process_subscribe_message] session [6404284456041962,default,open], subscribe [4, {}, synergy.screen.error]
[wamp_broker.cpp:201][process_subscribe_message] session [6404284456041962,default,open], subscribed [4, 9]
[rawsocket_transport.cpp:39][send_message] sending message: subscribed
[wamp_message_processor.cpp:47][process_message] processing message: subscribe
[wamp_broker.cpp:171][process_subscribe_message] session [6404284456041962,default,open], subscribe [5, {}, synergy.profile.snapshot]
[wamp_broker.cpp:201][process_subscribe_message] session [6404284456041962,default,open], subscribed [5, 10]
[rawsocket_transport.cpp:39][send_message] sending message: subscribed

F12 doesn't do anything, nor does ~.  If I mouse to the very center of the window (remember, the window's blank),  the cursor changes to a finger, and clicking opens the symless.com login screen. 

Ideas? This is:

# cat /etc/*-release
DISTRIB_ID=LinuxMint
DISTRIB_RELEASE=18.1
DISTRIB_CODENAME=serena
DISTRIB_DESCRIPTION="Linux Mint 18.1 Serena"
NAME="Linux Mint"
VERSION="18.1 (Serena)"
ID=linuxmint
ID_LIKE=ubuntu
PRETTY_NAME="Linux Mint 18.1"
VERSION_ID="18.1"
HOME_URL="http://www.linuxmint.com/"
SUPPORT_URL="http://forums.linuxmint.com/"
BUG_REPORT_URL="http://bugs.launchpad.net/linuxmint/"
VERSION_CODENAME=serena
UBUNTU_CODENAME=xenial
cat: /etc/upstream-release: Is a directory

Thanks...

[Onoitsu2 34]

Currently, as even @Nick Bolton has stated in another thread, the beta 4 when it comes to linux is a mess. It is looking to be remedied in beta 5, due out in about 4-5 weeks time. There were a few oversights that are now causing issues for many linux users overall.Your patience is appreciated while they get this next beta release working appropriately for all.

[jml 50]

No problem... that's why they're called "betas". 

Thanks!!!!