Give warning or error if stat and signal processing toolbox are not installed

[arnodelorme]

Below a user report

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An error states there is an undefined function 'finv' for input arguments of type of 'double.'

Now this is error occurred when I was using the Cleanline plugin to clean my eeg data. What is so strange is that I have used this plugin the previous day and did not make any changes to the settings nor added any additional programs to matlab and/or eeg. I am quite confused. Could you provide me with some insight and further direction? Thank you.

In addition, I tried to duplicate the error on another machine and received the same error.