Error unit package

ahilbig-common.sty

@@ -131,7 +131,7 @@
 \RequirePackage{stmaryrd}
 \RequirePackage{accents}
 \RequirePackage{nicefrac}
-\RequirePackage{units}
+%\RequirePackage{units}
 
 \RequirePackage{array}
 

ahilbig-presentation.sty

@@ -60,7 +60,7 @@
 \RequirePackage{smartdiagram}
 
 \RequirePackage{varsfromjobname} % Element[e] aus \jobname extrahieren
-%\RequirePackage{qrcode}          % Wird in maintitle genutzt - auskommentiert
+\RequirePackage{qrcode}          % Wird in maintitle genutzt - auskommentiert
 
 %\RequirePackage{pdfpages}
 
@@ -69,6 +69,7 @@
 \providecommand\insertlecture{Vortrag}
 \providecommand\lecturename{Vortragtitel}
 
+\def\insertaddtitle{null}
 \def\insertshrtpr{null}
 \def\insertshrtscr{null}
 
@@ -766,6 +767,8 @@
 	\iflogoins
 		\hbox to 2cm{\hss\insertlogo\hss}
 	\else
+		\hbox to 2cm{\hfill\qrcode[nolink,height=1cm]{\inserturl}\hskip 2.5pt}
+		\vskip 1em
 		\hbox to 2cm{\hfill\insertshortinstitute\hskip 2.5pt}
 	\fi%
 	\vskip3pt
@@ -805,7 +808,11 @@
 			\ifthenelse{\equal{\inserturl}{null}}{}{%
       \begin{tiny}
        %\versionsinfo
-							Quellen: \url{\inserturl}
+						Quellen: 
+						\begin{minipage}{0.6\textwidth} 
+							\centering
+							\qrcode[nolink,height=1.5cm]{\inserturl} \\[0.6em] \url{\inserturl}
+						\end{minipage}
 							\ifthenelse{\equal{\insertshrtpr}{null}}{}{%
 
 								Präsentation: \url{\insertshrtpr}
@@ -814,6 +821,11 @@
 
 								Skript: \url{\insertshrtscr}
 							}
+							\ifthenelse{\equal{\insertaddtitle}{null}}{}{%
+								\newline%
+								\vspace{1em}%
+								\insertaddtitle
+							}
 							
       \end{tiny}
       \vfill

ahilbig-script.sty

@@ -146,6 +146,9 @@
 \mode<article>{
   \parskip.5em plus 1pt minus 1pt
   \newenvironment{body}{\parskip=2pt plus 1pt minus 1pt}{}
+	\newcommand{\starteBody}{\begin{body}}
+	\newcommand{\beendeBody}{\end{body}}
+	
 }
 \mode<presentation>{
   \newenvironment{body}{\document\ifcd\setbeamertemplate{sidebar