We have an application that has previously used masked arrays from Numpy 1.0.3. Part of saving files from that application involved pickling data types that contained these masked arrays. In the latest round of library updates, we've decided to move to the most recent version of matplotlib, which requires Numpy 1.1. Unfortunately, when we try to unpickle the data saved with Numpy 1.0.3 in the new code using Numpy 1.1.0, it chokes because it can't import numpy.core.ma for the masked arrays. A check of Numpy 1.1.0 shows that this is now numpy.ma.core. Does anyone have any advice on how we can unpickle the old data files and update the references to the new classes? Thanks, Anthony. -- Anthony Floyd, PhD Convergent Manufacturing Technologies Inc. 6190 Agronomy Rd, Suite 403 Vancouver BC V6T 1Z3 CANADA Email: Anthony.Floyd@convergent.ca | Tel: 604-822-9682 x102 WWW: http://www.convergent.ca | Fax: 604-822-9659 CMT is hiring: See http://www.convergent.ca for details