make errors compiling from latest stable source code "doc/index.cache.bz2" and "doc/CMakeFiles/doc-handbook.dir/all"

Hello everyone, i checked everywhere by this error but couldn`t find anything related. I`m running ubuntu studio 12.04 updated and trying to compile from latest stable source code using the instructions on that very same site: http://www.kdenlive.org/user-manual/downloading-and-installing-kdenlive/.... After compiling sucefully mlt, frei0r and ffmpeg i cannot compile kdenlive. This is what i get after quite some time:

Scanning dependencies of target doc-handbook
[ 98%] Generating index.cache.bz2
index.docbook:5: warning: failed to load external entity "dtd/kdex.dtd"
]>
^
index.docbook:6: parser error : Entity 'language' not defined

^
index.docbook:6: validity error : Validation failed: no DTD found !

^
index.docbook:18: parser error : Entity 'FDLNotice' not defined
&FDLNotice;
^
index.docbook:49: parser error : Entity 'eg' not defined
ial-videos-2011-ogv.tar.bz2., and extract them to ⪚
^
index.docbook:50: parser error : Entity 'etc' not defined
me> subdirectory, audio files in the Audio directory, &etc;
^
index.docbook:86: parser error : Entity 'ie' not defined

Now that the project is ready, let’s start adding some clips (&ie; the o
^
index.docbook:102: parser error : Entity 'etc' not defined
nitor shows how the output video will look, with all effects, transitions, &etc;
^
index.docbook:118: parser error : Entity 'ie' not defined
imenu>Save. This saves our project, &ie;
^
index.docbook:137: parser error : Entity 'Ctrl' not defined
oks like in the image on the left. (Where I have zoomed in with &Ctrl;
^
index.docbook:153: parser error : Entity 'Ctrl' not defined
er or in the project monitor. If you prefer keyboard shortcuts, &Ctrl;
^
index.docbook:169: parser error : Entity 'ie' not defined
/footnote> for this is to move the timeline cursor to the desired position (&ie;
^
index.docbook:186: parser error : Entity 'Ctrl' not defined
ttom of the Kdenlive window, or with &Ctrl;
^
index.docbook:270: parser error : Entity 'eg' not defined
heckbox they are temporarily disabled (the settings remain though), this is ⪚
^
index.docbook:328: parser error : Entity 'Ctrl' not defined
uimenu>Render, or press &Ctrl;
^
index.docbook:328: parser error : Entity 'Enter' not defined
Render, or press &Ctrl;&Enter;
^
index.docbook:354: parser error : Entity 'underFDL' not defined
&underFDL;
^
index.docbook:356: parser error : Entity 'documentation.index' not defined
&documentation.index;
^
make[2]: *** [doc/index.cache.bz2] Error 1
make[1]: *** [doc/CMakeFiles/doc-handbook.dir/all] Error 2
make: *** [all] Error 2
gabrielmb@MOBBILLE:~/Builds/kdenlive/build$

I really don`t know how to proceed to work around that error, and would really like to get some help from you guys.