Sstrhsrtj

I came back to a file from several years ago which used to compile very well back then. When I compiled it now I got plenty of errors saying that I haven't defined the language vietnam yet (package Babel error). These errors correspond to vn in the file which stands for fontencoding{T5}selectfontselectlanguage{vietnam}. Here is a MWE of my file:

documentclass[paper=a5,fontsize=10pt,twoside,twocolumn,pagesize,DIV15,headsepline,titlepage,openright]{scrbook}

usepackage{scrpage2}

usepackage{cmap}

usepackage[utf8x]{inputenc}

usepackage[vietnam,polish,english,ngerman]{babel}

usepackage[T5,T1]{fontenc}

usepackage{longtable}

usepackage{lmodern}



newcommand*de{fontencoding{T1}selectfontselectlanguage{ngerman}}

newcommand*en{fontencoding{T1}selectfontselectlanguage{english}}

newcommand*pl{fontencoding{T1}selectfontselectlanguage{polish}}

newcommand*vn{fontencoding{T5}selectfontselectlanguage{vietnam}}



newcommand{textfsf}{sffamilybfseriesselectfont}

newcommand{textksf}{sffamilyitshapesmallselectfont}



makeatletter

g@addto@macrodescription{raggedright}

makeatother



setlength{parindent}{0pt}

setlength{parskip}{0.8ex plus 0.4ex minus 0.2ex}

flushbottom



clearscrheadings

ihead{}

chead{}

ohead{rightmark}

ifoot{}

cfoot{}

ofoot{pagemark}

pagestyle{scrheadings}



pdfinfo{

/Title (xxx.pdf)

/Creator (xxx)

/Producer (xxx)

/Author (xxx)

/CreationDate (D:20100101000000)

/ModDate (D:20100101000000)

/Subject (xxx)

/Keywords (xxx)

}



begin{document}

frontmatter

title{pl ZÓŁTA KROWA\ vn CHÀO MỪNG}

subtitle{pl NA ŁĄCE\ vn CÁC BẠN}

author{pl dzień\ vn tốt}

date{}

publishers{pl Wydawcy}

maketitle

mainmatter

pl tu będzie trochę tekstu vn vẫn có bằng tiếng Việt \

pl tu będzie trochę tekstu vn vẫn có bằng tiếng Việt \

pl tu będzie trochę tekstu vn vẫn có bằng tiếng Việt \

pl tu będzie trochę tekstu vn vẫn có bằng tiếng Việt \

pl tu będzie trochę tekstu vn vẫn có bằng tiếng Việt \

pl tu będzie trochę tekstu vn vẫn có bằng tiếng Việt \

backmatter

end{document}

Well, this worked before... I've been trying for hours to find a solution for this and I can't find anything. I've been out of LaTeX for years and that must have been a mistake...

Can anyone help me to solve this problem? I tried this solution here with an empty babel-vietnam.sty file. But it works only with a simple file like the MWE above. When it comes to complex files, the error remains. I am working with MiKTeX 2.9 & TeXnicCenter. I uninstalled them and installed again. It brought nothing. All packages are updated. I downloaded babel-vietnamese which comes as separate package. I changed vietnam to vietnamese which on the other hand brings every time TeX capacity exceeded, sorry [save size=50000] (whatever this means). I just can't get any forward with this. Any help highly appreciated!

Using vietnamese instead of vietnam works fine (gives no errors, I have no idea if the script is correct) for me (I also removed utf8x)

documentclass[paper=a5,fontsize=10pt,twoside,twocolumn,pagesize,DIV15,headsepline,titlepage,openright]{scrbook}

usepackage{scrpage2}

usepackage[vietnamese,polish,english,ngerman]{babel}

usepackage[T5,T1]{fontenc}

usepackage{longtable}

usepackage{lmodern}



newcommand*de{fontencoding{T1}selectfontselectlanguage{ngerman}}

newcommand*en{fontencoding{T1}selectfontselectlanguage{english}}

newcommand*pl{fontencoding{T1}selectfontselectlanguage{polish}}

newcommand*vn{fontencoding{T5}selectfontselectlanguage{vietnamese}}



newcommand{textfsf}{sffamilybfseriesselectfont}

newcommand{textksf}{sffamilyitshapesmallselectfont}



makeatletter

g@addto@macrodescription{raggedright}

makeatother



setlength{parindent}{0pt}

setlength{parskip}{0.8ex plus 0.4ex minus 0.2ex}

flushbottom



clearscrheadings

ihead{}

chead{}

ohead{rightmark}

ifoot{}

cfoot{}

ofoot{pagemark}

pagestyle{scrheadings}



pdfinfo{

/Title (xxx.pdf)

/Creator (xxx)

/Producer (xxx)

/Author (xxx)

/CreationDate (D:20100101000000)

/ModDate (D:20100101000000)

/Subject (xxx)

/Keywords (xxx)

}



begin{document}

frontmatter

title{pl ZÓŁTA KROWA\ vn CHÀO MỪNG}

subtitle{pl NA ŁĄCE\ vn CÁC BẠN}

author{pl dzień\ vn tốt}

date{}

publishers{pl Wydawcy}

maketitle

mainmatter

pl tu będzie trochę tekstu vn vẫn có bằng tiếng Việt \

pl tu będzie trochę tekstu vn vẫn có bằng tiếng Việt \

pl tu będzie trochę tekstu vn vẫn có bằng tiếng Việt \

pl tu będzie trochę tekstu vn vẫn có bằng tiếng Việt \

pl tu będzie trochę tekstu vn vẫn có bằng tiếng Việt \

pl tu będzie trochę tekstu vn vẫn có bằng tiếng Việt \

backmatter

end{document}