neerajww

Let me more clear. With the above lines of code, the ransac() does searching of bad channels only in the subset specified in picks. But when it does the follow...

As a follow up, i tried with montage=None expecting the PrepPipeline will extract information from the raw object. ``` PrepPipeline(raw, prep_params, montage=None) ``` But then I get the following (different)...

Thank you for the reply. I tried raw.save() saving the file as .fif but the error persists. 

Yes, you guessed right- I saved + reloaded - the data. Below is the version information.  Using the preload=True solved it. Thank you!