Error(s) in re-building vignettes:
  ...
--- re-building ‘Hom-vignette.Rmd’ using rmarkdown
Error: processing vignette ‘Hom-vignette.Rmd’ failed with diagnostics:
(converted from warning) invalid non-character version specification 'x' (type: double)
Calls:
 1: tools:::.buildOneVignette("Hom-vignette.Rmd", "/home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/SEMsens.Rcheck/vign_test/SEMsens", TRUE, FALSE, "Hom-vignette", "UTF-8", "/home/hornik/tmp/scratch/RtmpbhpYDG/filee4a6e489936b4.rds")
 2: tryCatch({
        engine$weave(file, quiet = quiet, encoding = enc)
        setwd(startdir)
        output <- find_vignette_product(name, by = "weave", engine = engine)
        if (!have.makefile && vignette_is_tex(output)) {
            texi2pdf(file = output, clean = FALSE, quiet = quiet)
            output <- find_vignette_product(name, by = "texi2pdf", engine = engine)
        }
    }, error = function(e) {
        OK <<- FALSE
        message(gettextf("Error: processing vignette '%s' failed with diagnostics:\n%s", file, conditionMessage(e)))
    })
 3: tryCatchList(expr, classes, parentenv, handlers)
 4: tryCatchOne(expr, names, parentenv, handlers[[1L]])
 5: doTryCatch(return(ex [... truncated]
--- failed re-building ‘Hom-vignette.Rmd’

--- re-building ‘SEMsens.Rmd’ using rmarkdown
Error: processing vignette ‘SEMsens.Rmd’ failed with diagnostics:
(converted from warning) invalid non-character version specification 'x' (type: double)
Calls:
 1: tools:::.buildOneVignette("SEMsens.Rmd", "/home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/SEMsens.Rcheck/vign_test/SEMsens", TRUE, FALSE, "SEMsens", "UTF-8", "/home/hornik/tmp/scratch/RtmpbhpYDG/filee4a6e76e5f672.rds")
 2: tryCatch({
        engine$weave(file, quiet = quiet, encoding = enc)
        setwd(startdir)
        output <- find_vignette_product(name, by = "weave", engine = engine)
        if (!have.makefile && vignette_is_tex(output)) {
            texi2pdf(file = output, clean = FALSE, quiet = quiet)
            output <- find_vignette_product(name, by = "texi2pdf", engine = engine)
        }
    }, error = function(e) {
        OK <<- FALSE
        message(gettextf("Error: processing vignette '%s' failed with diagnostics:\n%s", file, conditionMessage(e)))
    })
 3: tryCatchList(expr, classes, parentenv, handlers)
 4: tryCatchOne(expr, names, parentenv, handlers[[1L]])
 5: doTryCatch(return(expr), name, [... truncated]
--- failed re-building ‘SEMsens.Rmd’

--- re-building ‘Smith12vignette.Rmd’ using rmarkdown
Error: processing vignette ‘Smith12vignette.Rmd’ failed with diagnostics:
(converted from warning) invalid non-character version specification 'x' (type: double)
Calls:
 1: tools:::.buildOneVignette("Smith12vignette.Rmd", "/home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/SEMsens.Rcheck/vign_test/SEMsens", TRUE, FALSE, "Smith12vignette", "UTF-8", "/home/hornik/tmp/scratch/RtmpbhpYDG/filee4a6e6c9c8c27.rds")
 2: tryCatch({
        engine$weave(file, quiet = quiet, encoding = enc)
        setwd(startdir)
        output <- find_vignette_product(name, by = "weave", engine = engine)
        if (!have.makefile && vignette_is_tex(output)) {
            texi2pdf(file = output, clean = FALSE, quiet = quiet)
            output <- find_vignette_product(name, by = "texi2pdf", engine = engine)
        }
    }, error = function(e) {
        OK <<- FALSE
        message(gettextf("Error: processing vignette '%s' failed with diagnostics:\n%s", file, conditionMessage(e)))
    })
 3: tryCatchList(expr, classes, parentenv, handlers)
 4: tryCatchOne(expr, names, parentenv, handlers[[1L]])
 5: doTryCatch(ret [... truncated]
--- failed re-building ‘Smith12vignette.Rmd’

--- re-building ‘Smith19_6phantom3.Rmd’ using rmarkdown
Warning in .make_numeric_version(x, strict, .standard_regexps()$valid_numeric_version) :
  invalid non-character version specification 'x' (type: double)
Calls:
 1: tools:::.buildOneVignette("Smith19_6phantom3.Rmd", "/home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/SEMsens.Rcheck/vign_test/SEMsens", TRUE, FALSE, "Smith19_6phantom3", "UTF-8", "/home/hornik/tmp/scratch/RtmpbhpYDG/filee4a6e5913b6cc.rds")
 2: tryCatch({
        engine$weave(file, quiet = quiet, encoding = enc)
        setwd(startdir)
        output <- find_vignette_product(name, by = "weave", engine = engine)
        if (!have.makefile && vignette_is_tex(output)) {
            texi2pdf(file = output, clean = FALSE, quiet = quiet)
            output <- find_vignette_product(name, by = "texi2pdf", engine = engine)
        }
    }, error = function(e) {
        OK <<- FALSE
        message(gettextf("Error: processing vignette '%s' failed with diagnostics:\n%s", file, conditionMessage(e)))
    })
 3: tryCatchList(expr, classes, parentenv, handlers)
 4: tryCatchOne(expr, names, parentenv, handlers[[1L]])
 5: doTryCatch [... truncated]
--- finished re-building ‘Smith19_6phantom3.Rmd’

SUMMARY: processing the following files failed:
  ‘Hom-vignette.Rmd’ ‘SEMsens.Rmd’ ‘Smith12vignette.Rmd’

Error: Vignette re-building failed.
Execution halted