title: R CMD Check does not finish the step "Checking PDF version of manual ..."
body: <p>I am creating an R package using R Studio version 0.99.489 together with the most current R development version on Windows 7. I created  documentation .Rd files using roxygen2 and a .Rmd vignette using knitr. Until now everything worked out fine, but when I run the R CMD check within RStudio, the check gets stuck at the step "Checking PDF version of manual ...". I neither get an "OK" nor any error or warnings message. The step just does not proceed, even if I run it over night. I do not get any error or warning messages for the other steps as well, I have "OK"s everywhere.</p>
  
  <p>Consequently, I do not find a PDF manual in the package.Rcheck folder. I already created the manual myself using R CMD Rd2pdf package, which worked out fine. I copied it to several locations within the package folder but this did not help at all.</p>
  
  <p>I searched really a lot but I could not find any solution for this since I do not get any error message. I thought about administration, latex, or R version problems, but I cannot figure out if it is any of those or something else.</p>
  
  <p>One thing I recognized is that when the package is build, it prints out:</p>
  
  <p><em>CMD build "..PATH...\package" --no-resave-data  \ --no-manual</em> </p>
  
  <p>although I did not specify the <em>--no-manual</em>  option in the Build options from RStudio. Additionally, I did not find a way to change this. Might this be the problem?</p>
  
  <p>Can anyone help me with this? I would really appreciate any hints. Please let me know if you need any output or any other information from me.</p>
  
  <p>Thanks!</p>