This Error-Message is not understandable for me, what's wrong here?
! Extra }, or forgotten \right.<template> }$}\ifmeasuring@ \savefieldlength@ \fi \set@field \endtemplate \end{align}
The following looooong equation causes the error above:
\RequirePackage[patch]{kvoptions}
\documentclass
%[draft]
{DissOnlineLatex}
%\usepackage[ngerman]{babel}
\usepackage[T1]{fontenc}
\usepackage{lmodern}
\usepackage{graphicx}
\usepackage{subfigure}
\usepackage{amsmath,amssymb}
\usepackage{amsthm}
\usepackage{amsfonts}
\usepackage{tabularx}
\usepackage{rotating}
\usepackage{longtable}
\usepackage{lscape}
\usepackage{setspace}
%\usepackage[obeyspaces]{url}
\usepackage[style=chem-angew,backend=biber,]{biblatex}%bibtex8,
\usepackage{csquotes}
\usepackage{hyperref}
\usepackage[printonlyused]{acronym}
\bibliography{Literatur.bib}
\onehalfspacing
\usepackage{fancyhdr}
\usepackage[version=3]{mhchem}
\usepackage{eurosym}
\newcommand{\Natural}{{\mathbb{N}}}
\renewcommand{\topfraction}{1.0}
\renewcommand{\bottomfraction}{1.0}
\renewcommand{\floatpagefraction}{1.0}
\renewcommand{\dbltopfraction}{1.0}
\renewcommand{\dblfloatpagefraction}{1.0}
\begin{document}
\begin{align}
\Delta{f}&=4\ln{10}\cdot{\epsilon_{0}c^2}\cdot{}\nonumber
\\
&\left(\left(\frac{\sum_{A}{\varepsilon(\Delta\lambda)_{A}}}{N_{A}e^2\lambda_{av}^2}\cdot{\Delta{m_{e}}}\right)^2
+\left(\frac{m_{e}\sum_{A}{\varepsilon(\Delta\lambda)_{A}}}{N_{A}^{2}e^2\lambda_{av}^2}\cdot{\Delta{N_{A}}}\right)^2\right.\nonumber{}
\\
\left.&+\left(\frac{2m_{e}\sum_{A}{\varepsilon(\Delta\lambda)_{A}}}{N_{A}e^3\lambda_{av}^2}\cdot{\Delta{e}}\right)^2
+\left(\frac{2m_{e}\sum_{A}{\varepsilon(\Delta\lambda)_{A}}}{N_{A}e^2\lambda_{av}^3}\cdot{\Delta{\lambda_{av}}}\right)^2\right.\nonumber{}
\\
\left.&+\left(\frac{m_{e}\sum_{A}{(\Delta\lambda)_{A}}}{N_{A}e^2\lambda_{av}^2}\cdot{\Delta{\varepsilon}}\right)^2
+\left(\frac{m_{e}\sum_{A}{\varepsilon}}{N_{A}e^2\lambda_{av}^2}
\cdot{\Delta(\Delta{\lambda)_{A}}}\right)^2\right)^{\frac{1}{2}}
\end{align}
\end{document}
\left
on one side of&
and the matching\right
on the other side.\left...\right
are working. That they cannot be crossed with table cells, because they are TeX groups too.\renewcommand{\floatpagefraction}{1.0}
it will make most floats go to the end of a document as float pages are not usable unless the sum of the heights of the floats is exactly the text height.