# WARNING (theano.tensor.blas): Using NumPy C-API based implementation for BLAS functions.--------\>HELP!

**URL:** <https://discourse.pymc.io/t/warning-theano-tensor-blas-using-numpy-c-api-based-implementation-for-blas-functions-help/3228>\
**Category:** Questions\
**Created:** [May 9, 2019, 10:20am UTC](https://discourse.pymc.io/t/warning-theano-tensor-blas-using-numpy-c-api-based-implementation-for-blas-functions-help/3228 "2019-05-09T10:20:59Z")\
**Posts on this page:** 1\
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**Author:** ![lucianopaz](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.pymc.io/lucianopaz/32/2186_2.png) [@lucianopaz](https://discourse.pymc.io/u/lucianopaz)\
**Post date:** [May 10, 2019, 4:53am UTC](https://discourse.pymc.io/t/warning-theano-tensor-blas-using-numpy-c-api-based-implementation-for-blas-functions-help/3228/4 "2019-05-10T04:53:38Z")

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You broke your theano installation with the update. I suggest you start out in a new conda env, or uninstall everything from the env you were working with and run the following, which I looked up [here](http://deeplearning.net/software/theano_versions/dev/install_macos.html):

```auto
conda install numpy scipy mkl
conda install theano pygpu
conda install pymc3

```

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_[View the full topic](https://discourse.pymc.io/t/warning-theano-tensor-blas-using-numpy-c-api-based-implementation-for-blas-functions-help/3228)._