Tikzcd and classicthesis

Question

I want to use commuting diagrams and the classicthesis package.

I've edited the classicthesis document so that tikz, tikzcd and the braids packages are included after the classicthesis package.

However I get the error:

! Package pgfkeys Error: I do not know the key '/tikz/"f"' and I am going to ignore it. Perhaps you misspelled it.

Here's a minimal example:

\documentclass[
    oneside,openright,titlepage,numbers=noenddot,headinclude,%1headlines,
    %footinclude=true,
    cleardoublepage=empty,
    dottedtoc, % Make page numbers in the table of contents flushed right with dots leading to them
    BCOR=5mm,paper=a4,fontsize=11pt, % Binding correction, paper type and font size
    ngerman,american, % Languages, change this to your language(s)
    ]{scrreprt} 

% Includes the file which contains all the document configurations and packages - make sure to edit this file
\input{classicthesis-config}

 \begin{document}   
 \begin{center}
    \begin{tikzcd}
                U
                \arrow[r,hook, "f"]
              & V
\end{tikzcd}
\end{center}
\end{document}

However: If I write

\documentclass[
    oneside,openright,titlepage,numbers=noenddot,headinclude,%1headlines,
    %footinclude=true,
    cleardoublepage=empty,
    dottedtoc, % Make page numbers in the table of contents flushed right with dots leading to them
    BCOR=5mm,paper=a4,fontsize=11pt, % Binding correction, paper type and font size
    ngerman,american, % Languages, change this to your language(s)
    ]{scrreprt} 

% Includes the file which contains all the document configurations and packages - make sure to edit this file
\input{classicthesis-config}

 \begin{document}   
 \begin{center}
    \begin{tikzcd}
                U
                \arrow{r}{f}
              & V
\end{tikzcd}
\end{center}
\end{document}

everything works fine. This makes me rather confused. What is it, I'm missing?

Here's a stripped-down version of my classicthesis-config:

\PassOptionsToPackage{utf8}{inputenc} 
\usepackage{inputenc}

\PassOptionsToPackage{eulerchapternumbers,listings,drafting, pdfspacing, subfig,beramono,eulermath,parts}{classicthesis}

\newcounter{dummy} 
\providecommand{\mLyX}{L\kern-.1667em\lower.25em\hbox{Y}\kern-.125emX\@}
\newlength{\abcd}   

\PassOptionsToPackage{fleqn}{amsmath} 
\usepackage{amsmath}
\usepackage{amsthm}
\usepackage{amsfonts}

\PassOptionsToPackage{T1}{fontenc} 
\usepackage{fontenc}

\usepackage{textcomp} 
\usepackage{scrhack} 
\usepackage{xspace} 
\usepackage{mparhack} 
\usepackage{fixltx2e} 

%\PassOptionsToPackage{pdftex}{graphicx}
%\usepackage{graphicx} 

\usepackage{tabularx} 
\setlength{\extrarowheight}{3pt} 
\newcommand{\tableheadline}[1]{\multicolumn{1}{c}{\spacedlowsmallcaps{#1}}}
\newcommand{\myfloatalign}{\centering} % To be used with each float for alignment
\usepackage{caption}
\captionsetup{font=small}
\usepackage{subfig}  

\usepackage{classicthesis} 
\usepackage{tikz}
\usepackage{braids}
\usetikzlibrary{cd}