Error While Using Conv2dlayer With Lasagne Neuralnet

I have windows 8.1 64bit and use recommended here http://deeplearning.net/software/theano/install_windows.html#installing-theano python win-python distribution (python 3.4). I've w

Solution 1:

I managed to solve my issue by following steps given by IshanAntony on this website https://www.kaggle.com/c/otto-group-product-classification-challenge/forums/t/13973/a-few-tips-to-install-theano-on-windows-64-bits/98833 . Apparently Theano had problem with linking BLAS correctly so I downloaded and used open-BLAS and error vanished (links and steps needed to download and configure OPEN-BLAS can be found in IshanAntony's answer).