User Portlet User Portlet

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Thank you Neil! With the carriage return, it works.
It can't be the history, because i see this "anomalous" usage of memory as i import the data. Furthermore, if i apply the function ByteCount to the lists, it gives me two different results, as i wrote in the previous post, and it doesn't depend on...
Thank you, but SaveDefinitions is an option of Manipulate and i don't use that function... A very small example of what i mean: Button["Create an energy calibration", fit = CreateDialog[ Column[{"Insert a pair of point like...