OpenViBE forum

Posted: **Thu Sep 29, 2016 10:12 pm**

Hello all,

I am trying to run SSVEP examples on openvibe. I followed the instructions here: http://openvibe.inria.fr/steady-state-v ... otentials/.

When I run the ssvep-bci-2-training-acquisition.xml in openvibe designer, I get an error saying openvibe-ssvep-demo.exe stopped working.
I am using OpenBCI V3 board to get the EEG signals. I have connected it to the acquisition server and I tried running the other designs using this and I can see the data.

This is the log from openbci designer:

Code: Select all

[  INF  ] Adding configuration file(s) [C:/Program Files (x86)/openvibe//share/openvibe/kernel/openvibe-delayed.conf]
[  INF  ] Adding configuration file(s) [C:/Users/Vaibhav/AppData/Roaming/openvibe/openvibe-delayed.conf]
[  INF  ] Adding configuration file(s) [C:/Program Files (x86)/openvibe/share/openvibe/scenarios/bci-examples/ssvep/scenario.conf]
[  INF  ] At time 0.000 sec <Box algorithm::(0x7e8245e4, 0x41dbf359) aka Peripheral Settings> <In Script> Generating 'C:/Users/Vaibhav/AppData/Roaming/openvibe/openvibe-ssvep-demo.conf'
[  INF  ] At time 0.000 sec <Box algorithm::(0x7e8245e4, 0x41dbf359) aka Peripheral Settings> Lua script terminated
[  INF  ] At time 0.211 sec <Box algorithm::(0x643a57e6, 0x5db6b5a5) aka Experiment Settings> <In Script> Writing additional configuration to 'C:/Users/Vaibhav/AppData/Roaming/openvibe/openvibe-ssvep-demo.conf'
[  INF  ] At time 0.211 sec <Box algorithm::(0x643a57e6, 0x5db6b5a5) aka Experiment Settings> <In Script> Writing file 'C:/Program Files (x86)/openvibe/share/openvibe/scenarios/bci-examples/ssvep/configuration/temporal-filter-freq-1.cfg'
[  INF  ] At time 0.211 sec <Box algorithm::(0x643a57e6, 0x5db6b5a5) aka Experiment Settings> <In Script> Writing file 'C:/Program Files (x86)/openvibe/share/openvibe/scenarios/bci-examples/ssvep/configuration/temporal-filter-freq-2.cfg'
[  INF  ] At time 0.211 sec <Box algorithm::(0x643a57e6, 0x5db6b5a5) aka Experiment Settings> <In Script> Writing file 'C:/Program Files (x86)/openvibe/share/openvibe/scenarios/bci-examples/ssvep/configuration/temporal-filter-freq-3.cfg'
[  INF  ] At time 0.211 sec <Box algorithm::(0x643a57e6, 0x5db6b5a5) aka Experiment Settings> <In Script> Writing file 'C:/Program Files (x86)/openvibe/share/openvibe/scenarios/bci-examples/ssvep/configuration/time-based-epoching.cfg'
[  INF  ] At time 0.211 sec <Box algorithm::(0x643a57e6, 0x5db6b5a5) aka Experiment Settings> Lua script terminated
[  INF  ] Adding configuration file(s) [C:/Program Files (x86)/openvibe//share/openvibe/kernel/openvibe-delayed.conf]
[  INF  ] Adding configuration file(s) [C:/Users/Vaibhav/AppData/Roaming/openvibe/openvibe-delayed.conf]
[  INF  ] Adding configuration file(s) [C:/Program Files (x86)/openvibe/share/openvibe/scenarios/bci-examples/ssvep/scenario.conf]
Delay : [1]
[  INF  ] At time 0.000 sec <Box algorithm::(0x08185827, 0x2b518b10) aka SSVEP Training Controller> <In Script> Number of goals in sequence: [32]
[  INF  ] At time 0.000 sec <Box algorithm::(0x08185827, 0x2b518b10) aka SSVEP Training Controller> <In Script> Stimulation Duration : [7]
[  INF  ] At time 0.000 sec <Box algorithm::(0x08185827, 0x2b518b10) aka SSVEP Training Controller> <In Script> Break Duration : [4]
[  INF  ] At time 0.000 sec <Box algorithm::(0x08185827, 0x2b518b10) aka SSVEP Training Controller> <In Script> Flickering Delay : [1.000000]
[  INF  ] At time 0.000 sec <Box algorithm::(0x08185827, 0x2b518b10) aka SSVEP Training Controller> <In Script> Target dimensions : width = 0.3, height = 0.3
[  INF  ] At time 0.000 sec <Box algorithm::(0x08185827, 0x2b518b10) aka SSVEP Training Controller> <In Script> Target 0 : x = 0 y = 0
[  INF  ] At time 0.000 sec <Box algorithm::(0x08185827, 0x2b518b10) aka SSVEP Training Controller> <In Script> Target 1 : x = 0 y = 0.5
[  INF  ] At time 0.000 sec <Box algorithm::(0x08185827, 0x2b518b10) aka SSVEP Training Controller> <In Script> Target 2 : x = -0.5 y = 0
[  INF  ] At time 0.000 sec <Box algorithm::(0x08185827, 0x2b518b10) aka SSVEP Training Controller> <In Script> Target 3 : x = 0.5 y = 0
[  INF  ] At time 0.000 sec <Box algorithm::(0x2eb18d3c, 0x7422b864) aka Start Stimulation> Lua script terminated
vrpn: Connection request received from 127.0.0.1: 127.0.0.1 50517
VRPN Warning
 (3) from SSVEP_VRPN_StartStop: No response from server for >= 3 seconds
VRPN Warning
 (4) from SSVEP_VRPN_StartStop: No response from server for >= 3 seconds
VRPN Warning
 (5) from SSVEP_VRPN_StartStop: No response from server for >= 3 seconds
vrpn_Endpoint::handle_tcp_messages:  Can't read header (this is normal when a connection is dropped)
vrpn: TCP handling failed, dropping connection (this is normal when a connection is dropped)
VRPN Warning
 (6) from SSVEP_VRPN_StartStop: No response from server for >= 3 seconds
VRPN Warning
 (7) from SSVEP_VRPN_StartStop: No response from server for >= 3 seconds
vrpn_Endpoint::send_pending_reports(): No TCP connection
vrpn_Connection_IP::send_pending_reports:  Closing failed endpoint.
[WARNING] At time 8.141 sec <Box algorithm::(0x08185827, 0x2b518b10) aka SSVEP Training Controller> Lua error: [send_stimulation] This thread has been requested to quit...
Connection was deleted while 1 references still remain.

I will really appreciate the help.

Thank You,
Vaibhav

Posted: **Fri Sep 30, 2016 7:31 am**

One thing that comes to mind is that scenarios shouldn't be run from under Program Files, as normally users don't have access to write there. Copy the folder to some 'normal' directory that you have full access to and try again. After that, does the graphical part launch properly?

Cheers,
Jussi

Posted: **Fri Sep 30, 2016 6:34 pm**

jtlindgren wrote:One thing that comes to mind is that scenarios shouldn't be run from under Program Files, as normally users don't have access to write there. Copy the folder to some 'normal' directory that you have full access to and try again. After that, does the graphical part launch properly?

Cheers,
Jussi

It was giving that unable to write error, then I have given write permissions to the openVIBE folder in program files. And then after running it I get a message saying openvibe-ssvep-demo.exe stopped working. Graphical interface doesn't open.

Posted: **Fri Oct 21, 2016 12:12 pm**

I'm afraid crashes are very hard to solve without building the software in debug mode and then launching it in debugger in order to see where it actually crashes. The Mind Shooter mostly runs alright here, so I don't know how to reproduce your problem.

You might also try to inspect any log files in AppData/roaming/openvibe/ to see if there's any errors or warnings mentioned related to the run.

Best,
Jussi

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