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And it worked just fine, thank you sir.

I was following the TikZ & PGF Manual for Version 3.0.1a, and when I try the second example from chapter 3 I get an error saying 'Missing \endcsname inserted.' on [11, 1]

My installed pgf version is 3.1.4a and using pdflatex.

Log file attatched

The .tex file (the full code from the example ...