MATLAB to Kdb Segmentation Fault

The error appears sporadically, whilst loading *.mat files into the database; could have loaded 500 GB of data, could have just 100 MB:

Error using kx/exec (line 69)
Java exception occurred:
java.net.SocketException: Connection reset
    at java.net.SocketOutputStream.socketWrite(Unknown Source)
    at java.net.SocketOutputStream.write(Unknown Source)
    at c.w(c.java:547)
    at c.ks(c.java:551)

On the Kdb end I get:

Sorry, this application or an associated library has encountered a fatal error and will exit.
If known, please email the steps to reproduce this error to tech@kx.com
with a copy of the kdb+ startup banner.
Thank you.
Segmentation fault

How do I get rid of this error?
_________________________________________________________________________

KDB+ 3.2 2015.01.20 Copyright (C) 1993-2015 Kx Systems
l32/ 48()core 386759MB

 < M A T L A B (R) >
Copyright 1984-2014 The MathWorks, Inc.
R2014a (8.3.0.532) 64-bit (glnxa64)
February 11, 2014

was there any further info printed? e.g. stack trace?
was a core dump produced? If so, can you load it into gdb and get the backtrace?

do you have multiple kdb+ processes writing/reading the same hdb area?

best case is for you to find the steps to reproduce it and let us know them.