Pure Virtual Method error

[matthewgilbert]

Currently there are sporadic pure virtual method called errors when bulkref_hist is called. The general setup looks like

import pdblp
con = pdblp.BCon()
con.sart()
con.bulkref_hist("BCOM Index", "INDX_MWEIGHT_HIST", ["20100201"], date_field="END_DATE_OVERRIDE")

This periodically causes python to terminate with the following message.

pure virtual method called
terminate called without an active exception
Aborted (core dumped)

Unsure what is going on here and determine this is complicated by the fact that this problem appears intermittent.