Latex errors (build on windows)

Where can I found hepl about latex errors:

the R CMD check tells me less, but:
* checking PDF version of manual ... WARNING
LaTeX errors when creating PDF version.
This typically indicates Rd problems.
* checking PDF version of manual without hyperrefs or index ... ERROR
Re-running with no redirection of stdout/stderr.
Hmm ... looks like a package
Error in texi2dvi(file = file, pdf = TRUE, clean = clean, quiet = quiet,  :
    pdflatex is not available

Error in running tools::texi2pdf()

The http://win-builder.r-project.org tells me more details but I am
comlpetely lost

especially.:

LaTeX errors found:



   ! Paragraph ended before \hyper at n@rmalise was complete.
<to be read again>
                     \par
l.575 \end

   {ExampleCode}
! You can't use `macro parameter character #' in horizontal mode.
<argument> ...1,1,1,-1),stringsAsFactors=FALSE) ##
                                                    ## comment text in the examples ...
l.575 \end


{ExampleCode}
! Missing $ inserted.
<inserted text>
                  $
l.575 \end

Knut