Running examples in 'RndTexExams-Ex.R' failed
The error most likely occurred in:

> ### Name: rte.build.rdn.test
> ### Title: Build random tests from LaTeX file
> ### Aliases: rte.build.rdn.test
> 
> ### ** Examples
> 
> # define some options
> latex.dir.out = 'latexOut' # Name of folder where latex files are going (will create if not exists)
> pdf.dir.out = 'PdfOut'     # Name of folder where resulting pdf files are going
> f.out <- 'MyRandomTest_'   # Name of pdfs (MyRandomTest_1.pdf, MyRandomTest_2.pdf, ... )
> n.test <- 1                # Number of tests to build
> n.question <- 2            # Number of questions in each test
> 
> # Get latex example from package
> f.in <- system.file("extdata", "MyRandomTest_examdesign.tex", package = "RndTexExams")
> 
> # Break latex file into a R list
> list.out <- rte.analyze.tex.file(f.in,
+                                  latex.dir.out = latex.dir.out,
+                                  pdf.dir.out = pdf.dir.out)

rte: Changing LaTeX file into dataframe... Done> 
> # Build pdfs
> result.out <- rte.build.rdn.test(list.in = list.out,
+                                  f.out = f.out,
+                                  n.test = n.test,
+                                  n.question = n.question,
+                                  latex.dir.out = latex.dir.out,
+                                  pdf.dir.out = pdf.dir.out)

rte: Checking for error in inputs... 
Sorry, but D:\compiler\texmf\miktex\bin\pdflatex.exe did not succeed.

You may want to visit the MiKTeX project page, if you need help.
Warning: running command 'pdflatex -version' had status 1
Done
Sorry, but D:\compiler\texmf\miktex\bin\pdflatex.exe did not succeed.

You may want to visit the MiKTeX project page, if you need help.
Warning: running command 'pdflatex --version' had status 1
Error in if (stringr::str_detect(str.out, stringr::fixed("MiKTeX"))) flavor.latex <- "miktex" : 
  missing value where TRUE/FALSE needed
Calls: rte.build.rdn.test -> cat -> rte.check.latex.flavor
Execution halted