CALGARY—A production issue last week marked the second distribution hiccup for the Calgary Herald since Transcontinental took over its printing from Postmedia in November.

Due to an overnight glitch, the Calgary Herald and the Calgary edition of the National Post were not fully distributed to subscribers on Dec. 12. While TC Transcontinental Printing declined to disclose further details, the company said the issues have since been resolved. "We don't anticipate further problems down the road," said Jennifer McCaughey, senior director of investor relations and corporate external communications.

"Postmedia and the Calgary Herald sincerely apologize to readers and advertisers as we continue to work through the growing pains of a new production system," said Postmedia in a released statement.

The Herald first reported production difficulties on Nov. 28, when roughly 80% of its press run along with copies of the National Post were not distributed due to "press issues coupled with computer problems."

In both instances, subscribers were given an automatic credit and an online e-paper version was made available for free for the day.