Error (0xc0000005) using LSL Sourse

[cmontilla]

I try to use LSL Source of BCI2000 and despite having the LSL stream active:

2026-09-09T10:56:43.307 - BCI2000 Started.
2026-09-09T10:56:43.402 - SignalSource: Waiting for configuration ...
2026-09-09T10:56:43.429 - SignalProcessing: Waiting for configuration ...
2026-09-09T10:56:43.705 - Application: Waiting for configuration ...
2026-09-09T10:57:29.883 - Operator set configuration.
2026-09-09T10:57:29.885 - SignalSource: DataIOFilter::AutoConfig: LSLADC::AutoConfig:
Now waiting for an EEG stream...
2026-09-09T10:57:31.901 - SignalSource error:
Unhandled Win32 exception of type ACCESS_VIOLATION (0xc0000005)
Terminating LSLSource module.
2026-09-09T10:57:32.913 - SignalSource error:
Lost connection to SignalSource.

The stream name is the same "EEG"

Thanks for your support.

[mellinger]

Hi, thanks for reporting this.
There was a bug in older versions of the LSLSource. Which version of BCI2000 are you using?

[cmontilla]

I am using version 3.6.7385

Thanks.

[mellinger]

The current version of BCI2000 is 3.6.9546. A couple of issues has been fixed in the LSLSource since.

Unfortunately, the latest BCI2000 installer is version 3.6.7385. To use a version newer than 3.6.7385, you will need to download and build BCI2000 from source as described here:
https://www.bci2000.org/mediawiki/index ... ng_BCI2000

[cmontilla]

I am trying to do this, and I am getting two errors during the BCI2000 compilation due to the file "cannot open input file 'C:\BCI2000.x64\\prog\SignalSharingClientLib.lib'" in Visual Studio.
I am not sure if this affects P300 applications...

Thanks!!

[mellinger]

Sorry for the issue, and thanks for reporting.
I fixed the build order and hope it works for you after updating from SVN.