The error message is as follows, any help would be greatly appreciated
Uwe Brauer
LaTeX Font Warning: Font shape `OT1/cmss/m/n' in size <4> not available
(Font) size <5> substituted on input line 14.
[1{/usr/local/texlive/2016/texmf-var/fonts/map/pdftex/updmap/pdftex.map}]
./testbeamer.tex:15: Argument of \@gobble has an extra }.
<inserted text>
\par
l.15 ...t equation \protect (\ref{eq:splines:3})}
Runaway argument?
./testbeamer.tex:15: Paragraph ended before \@gobble was complete.
<to be read again>
\par
l.15 ...t equation \protect (\ref{eq:splines:3})}
./testbeamer.tex:15: Argument of \@firstofone has an extra }.
<inserted text>
\par
l.15 ...t equation \protect (\ref{eq:splines:3})}
Runaway argument?
./testbeamer.tex:15: Paragraph ended before \@firstofone was complete.
<to be read again>
\par
l.15 ...t equation \protect (\ref{eq:splines:3})}