No silences are detected

This section should be pretty robust, and the only error that you could get is a message saying that no silence were detected. If this is the case, this is likely that the parameters are wrong, and that the data are not properly understood. Be sure that your data are properly loaded by using the preview mode:

>> spyking-circus mydata.extension -p

If this is the case, please try to reduce the safety_time value. If no silences are detected, then your data may not be properly loaded.

Whitening is disabled because of NaNs

Again, this should be rare, and if this warning happens, you may try to get rid of this warning by changing the parameters of the whitening section. Try for example to increase safety_time for example to 3, or try to change the value of chunk_size. We may enhance the robustness of the whitening in future releases.