• using R version 2.15.3 (2013-03-01)
• using platform: i386-apple-darwin9.8.0 (32-bit)
• using session charset: UTF-8
• checking for file ‘extraTrees/DESCRIPTION’ ... OK
• this is package ‘extraTrees’ version ‘0.3-1’
• checking package namespace information ... OK
• checking package dependencies ... OK
• checking if this is a source package ... OK
• checking if there is a namespace ... OK
• checking for executable files ... OK
• checking whether package ‘extraTrees’ can be installed ... OK
• checking installed package size ... OK
• checking package directory ... OK
• checking for portable file names ... OK
• checking for sufficient/correct file permissions ... OK
• checking DESCRIPTION meta-information ... OK
• checking top-level files ... OK
• checking for left-over files ... OK
• checking index information ... OK
• checking package subdirectories ... OK
• checking R files for non-ASCII characters ... OK
• checking R files for syntax errors ... OK
• checking whether the package can be loaded ... OK
• checking whether the package can be loaded with stated dependencies ... OK
• checking whether the package can be unloaded cleanly ... OK
• checking whether the namespace can be loaded with stated dependencies ... OK
• checking whether the namespace can be unloaded cleanly ... OK
• checking loading without being on the library search path ... OK
• checking for unstated dependencies in R code ... OK
• checking S3 generic/method consistency ... OK
• checking replacement functions ... OK
• checking foreign function calls ... OK
• checking R code for possible problems ... OK
• checking Rd files ... OK
• checking Rd metadata ... OK
• checking Rd cross-references ... OK
• checking for missing documentation entries ... OK
• checking for code/documentation mismatches ... OK
• checking Rd \usage sections ... OK
• checking Rd contents ... OK
• checking for unstated dependencies in examples ... OK
• checking sizes of PDF files under ‘inst/doc’ ... OK
• checking installed files from ‘inst/doc’ ... OK
• checking examples ... ERROR
  Running examples in ‘extraTrees-Ex.R’ failed
  The error most likely occurred in:
  
  > ### Name: extraTrees
  > ### Title: Function for training ExtraTree classifier or regression.
  > ### Aliases: extraTrees extraTrees.default
  > ### Keywords: regression,classification,trees
  >
  > ### ** Examples
  >
  > ## Regression with ExtraTrees:
  > n <- 1000 ## number of samples
  > p <- 5 ## number of dimensions
  > x <- matrix(runif(n*p), n, p)
  > y <- (x[,1]>0.5) + 0.8*(x[,2]>0.6) + 0.5*(x[,3]>0.4) +
  + 0.1*runif(nrow(x))
  > et <- extraTrees(x, y, nodesize=3, mtry=p, numRandomCuts=2)
  Error in .jnew("org.extratrees.Matrix", .jarray(m), nrow(m), ncol(m)) :
  java.lang.UnsupportedClassVersionError: Bad version number in .class file
  Calls: extraTrees ... extraTrees.default -> .jnew -> toJavaMatrix -> .jnew -> .External
  Execution halted
• elapsed time (check, wall clock): 0:30