Pfthb

I am using beamer to type slides. Recently, I reinstalled AucTeX and now the numbers don't look right. I use beginenumerate[1.] so that it will print 1., 2., etc. instead of the numbers with the circles around them. But, after the reinstallation, it is doing the circles, even for the exact same files where it was okay before even with TeXshop on a Mac.

My example code:

documentclass[12pt]beamer


%PACKAGES
usepackagemultimedia,pdfpages,mathtools,enumerate
usepackageempheq
geometrypaperwidth=7.5in,paperheight=10.5in
usepackageamsmath
usepackage[normalem]ulem
usepackagecomment,multicol,graphicx
usepackageamsmath
usepackageamssymb
usepackagemarvosym
usepackagepdfsync




%SETTING THEME
usethemeBoadilla
definecolorHalloweenRGB250,155,30
usecolorthemeseahorse



setbeamerfontfootlinesize=fontsize1212selectfont
setbeamertemplatefootline

 leavevmode




setbeamertemplatenavigation symbols 
setbeamersizetext margin left=.5 cm, text margin right=.5 cm 


makeatletter
renewcommand*env@matrix[1][*c@MaxMatrixCols c]%
 hskip -arraycolsep
 let@ifnextcharnew@ifnextchar
 array#1
makeatother

makeatletter
renewcommand*env@matrix[1][*c@MaxMatrixCols c]%
 hskip -arraycolsep
 let@ifnextcharnew@ifnextchar
 array#1
makeatother


begindocument

beginexample
 beginenumerate[1.]
 item La
 item La La
 endenumerate
endexample

enddocument

Don't use the enumerate package with beamer since it provides templates to set these things. Specifically, you're interested in the [default] template for enumerate item:

documentclassbeamer

usethemeBoadilla
usecolorthemeseahorse

begindocument

beginframe
 beginenumerate
 item La
 item La La
 endenumerate

 setbeamertemplateenumerate item[default]

 beginenumerate
 item La
 item La La
 endenumerate
endframe

enddocument