Network Events source plugin causing OE GUI to crash

[Per Knutsen]

I am having an issue with the Network Events plug-in. When its added to the signal chain, the port (default 5556) is not opened. Clicking Restart Connection crashes the GUI. This is on Windows 7 (64 bit).

Odd thing is, it was working just fine yesterday. I configured the firewall and connected just fine from a remote PC.

Then today, after a reboot, I can no longer make a connection. I have reinstalled OE GUI (not from source), removed all entries in the firewall and put them back. OE keeps crashing.

It would appear as if a persistent change somewhere on my system is causing this.

Does anyone have any idea how to approach this? Does OE log errors anywhere?

 - Per

[Alessio Buccino]

Hi Per,

Does it crashes also when you start recording? In that case you have to click on the 3 vertical lines in the editor and disable the 2 channels in the REC section.

I had the same problem previously.

Bests,

Alessio (CINPLA group)

[Aarón Cuevas]

If the crash occurs when recording, it is the known bug Alessio mentions.

If it crashes when clicking Restart Connection, the issue is something else. Can you try with a different port number? (always higher than 1024). Also, try disabling any firewall you might have, just to see if it could be a change on it what is causing the issue.

Best,

Aarón.

[Antonin Blot]

I have the same issue. Every time I click on restart connection open ephys crashes (windows 7, binary downloaded today). I tried to change the port number but when I press "enter" after changing the number, the GUI crashes again. I'm not sure what has changed. The same system was working 2 months ago (even if we always had stability issues when trying to reload a signal chain with a network event source in it).

What could I do to debug that?

Best,
Antonin

[Antonin Blot]

Did you solve your problem Per?

I build the "Debug64" version of the plugin-gui (master branch) and the error is still there. When I click on restart connection I get:
Unhandled exception at 0x000007FEFD2BA06D (KernelBase.dll) in open-ephys.exe: 0x40000015:  %hs (parameters: 0x000007FEE782DAD0).

The visual studio debugger point to that line (L566 of networkevents.cpp):

 result = zmq_recv(responder, buffer, MAX_MESSAGE_LENGTH-1, 0);  // blocking

Anyone has the same problem or has an idea on how to solve that?

(windows7, zeromq 4.0.4 installed)

[Per Knutsen]

Hi,

No, the problem persisted and I have since then moved jobs and am no longer using OE.

Best of luck troubleshooting!

Per M Knutsen

University of Oslo

Dept. of Molecular Medicine, Physiology Sect.

PB 1103 Blindern, NO-0317 Oslo

+47.45103762

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