Corrupted .bhv2 file, 'End of file' error

Hi Jaweon,

While running a MonkeyLogic task, the computer ran out of memory. The task did not stop, but the .bhv2 file for this session cannot be read with the mlread function and generates the following error:

Error using mlbhv2/read_variable (line 293)
End of file.

Is there a way to retrieve some data from this file? At least the trials performed before the memory was full. The corrupted .bhv2 file is quite large, as it contains webcam videos.


By the way, I really like MonkeyLogic, it's a very powerful and easy to use tool. Thanks a lot for sharing it.

Have a great day

Antoine

Try to read again with the latest NIMH ML.

I tried to open the file with version 2.2.49 and got the same error.

It means you are still running the old version. If you ran the new version, at least the line number in the error message would be different. Please check the MATLAB path and make sure that the commands in the new version are called. The new version returns the readable portion of data even when an error occurs.

I installed the latest version on a computer other than the one used to run the experiment and when I launch the application the first line is:

<<< MonkeyLogic >>> NIMH MonkeyLogic 2.2.49 (Dec 19, 2024)

The error was at line 293 and is now at line 298.

Now the message is supposed to be a warning, not an error, and anything readable up until the warning should be in the return value of mlread(). Did you see anything in the return value?

There is no return value created, the Workspace is empty. Here's the full error message:

Error using mlbhv2/read_variable (line 298)
End of file.

Error in mlbhv2/read_index (line 204)
[obj.var_pos,name] = read_variable(obj);

Error in mlbhv2/open (line 31)
[~,info] = read_index(obj);

Error in mlbhv2 (line 18)
if exist('filename','var'), obj.open(filename,mode); end

Error in mlfileopen (line 8)
case '.bhv2', fp = mlbhv2(filepath,mode);

Error in mlread (line 22)
otherwise, fid = mlfileopen(filename);

I sent you a modified version of mlbhv2.m by email. Please check your inbox. The data could be read up to Trial200. The new mlbhv2.m will be included in the future release of NIMH ML, so you do not need to keep the file.