betaExpert : f_mode: no visible global function definition for ‘qbeta’
betaExpert : f_mode_zero: no visible global function definition for
  ‘qbeta’
betaExpert : f_mode_one: no visible global function definition for
  ‘qbeta’
betaExpert : f_mean: no visible global function definition for ‘qbeta’
betaExpert: no visible global function definition for ‘optimize’
define_prior2: no visible global function definition for ‘combn’
print.betaExpert: no visible global function definition for ‘qbeta’
print.betaPERT: no visible global function definition for ‘qbeta’
propCI_agresticoull: no visible global function definition for ‘qnorm’
propCI_exact: no visible global function definition for ‘qbeta’
propCI_jeffreys: no visible global function definition for ‘qbeta’
propCI_wald: no visible global function definition for ‘qnorm’
propCI_wilson: no visible global function definition for ‘qnorm’
truePrevBinom: no visible binding for global variable ‘sd’
truePrevBinom: no visible global function definition for ‘new’
truePrevMultinom_conditional: no visible binding for global variable
  ‘sd’
truePrevMultinom_conditional: no visible global function definition for
  ‘new’
truePrevMultinom_covariance: no visible global function definition for
  ‘combn’
truePrevMultinom_covariance: no visible binding for global variable
  ‘sd’
truePrevMultinom_covariance: no visible global function definition for
  ‘new’
truePrevPools: no visible binding for global variable ‘sd’
truePrevPools: no visible global function definition for ‘new’
autocorr.plot,prev : <anonymous>: no visible global function definition
  for ‘var’
autocorr.plot,prev: no visible global function definition for ‘head’
autocorr.plot,prev: no visible global function definition for ‘par’
autocorr.plot,prev: no visible global function definition for
  ‘devAskNewPage’
densplot,prev : <anonymous>: no visible global function definition for
  ‘var’
densplot,prev: no visible global function definition for ‘head’
densplot,prev: no visible global function definition for ‘par’
densplot,prev: no visible global function definition for
  ‘devAskNewPage’
gelman.plot,prev : <anonymous>: no visible global function definition
  for ‘var’
gelman.plot,prev: no visible global function definition for ‘head’
gelman.plot,prev: no visible global function definition for ‘par’
gelman.plot,prev: no visible global function definition for
  ‘devAskNewPage’
plot,prev: no visible global function definition for ‘par’
plot,prev: no visible global function definition for ‘devAskNewPage’
plot,prev: no visible global function definition for ‘title’
summary,prev: no visible global function definition for ‘median’
summary,prev: no visible global function definition for ‘var’
summary,prev: no visible global function definition for ‘density’
summary,prev: no visible global function definition for ‘sd’
summary,prev: no visible global function definition for ‘quantile’
traceplot,prev : <anonymous>: no visible global function definition for
  ‘var’
traceplot,prev: no visible global function definition for ‘head’
traceplot,prev: no visible global function definition for ‘par’
traceplot,prev: no visible global function definition for
  ‘devAskNewPage’
Undefined global functions or variables:
  combn density devAskNewPage head median new optimize par qbeta qnorm
  quantile sd title var
Consider adding
  importFrom("grDevices", "devAskNewPage")
  importFrom("graphics", "par", "title")
  importFrom("methods", "new")
  importFrom("stats", "density", "median", "optimize", "qbeta", "qnorm",
             "quantile", "sd", "var")
  importFrom("utils", "combn", "head")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').