bestfit.search.exhaustive: no visible global function definition for
  'glm'
bestfit.search.exhaustive: no visible global function definition for
  'AIC'
bestfit.search.exhaustive.true: no visible global function definition
  for 'tktoplevel'
bestfit.search.exhaustive.true: no visible global function definition
  for 'tkwm.geometry'
bestfit.search.exhaustive.true: no visible global function definition
  for 'tkwm.title'
bestfit.search.exhaustive.true: no visible global function definition
  for 'tklabel'
bestfit.search.exhaustive.true: no visible global function definition
  for 'ttkprogressbar'
bestfit.search.exhaustive.true: no visible global function definition
  for 'tkgrid'
bestfit.search.exhaustive.true: no visible global function definition
  for 'tkgrid.columnconfigure'
bestfit.search.exhaustive.true: no visible global function definition
  for 'tkconfigure'
bestfit.search.exhaustive.true: no visible global function definition
  for 'AIC'
bestfit.search.exhaustive.true: no visible global function definition
  for 'glm'
bestfit.search.exhaustive.true: no visible global function definition
  for 'tkdestroy'
bestfit.search.random: no visible global function definition for
  'tclVar'
bestfit.search.random: no visible global function definition for
  'tktoplevel'
bestfit.search.random: no visible global function definition for
  'tkwm.geometry'
bestfit.search.random: no visible global function definition for
  'tkwm.title'
bestfit.search.random: no visible global function definition for
  'tklabel'
bestfit.search.random: no visible global function definition for
  'ttkprogressbar'
bestfit.search.random: no visible global function definition for
  'tkgrid'
bestfit.search.random: no visible global function definition for
  'tkbutton'
bestfit.search.random: no visible global function definition for
  'tkfont.create'
bestfit.search.random : <anonymous>: no visible global function
  definition for 'tclvalue<-'
bestfit.search.random: no visible global function definition for
  'tkgrid.columnconfigure'
bestfit.search.random: no visible global function definition for
  'tkconfigure'
bestfit.search.random: no visible global function definition for
  'runif'
bestfit.search.random: no visible global function definition for
  'tclvalue'
bestfit.search.random: no visible global function definition for
  'tkdestroy'
export.MAR: no visible global function definition for 'write.table'
export.MAR: no visible global function definition for 'stack'
export.MAR : write.results: no visible global function definition for
  'write.table'
export.MAR : write.results: no visible global function definition for
  'stack'
fun.restrict.BC: no visible global function definition for 'tktoplevel'
fun.restrict.BC: no visible global function definition for 'tkwm.title'
fun.restrict.BC: no visible global function definition for 'tkframe'
fun.restrict.BC: no visible global function definition for
  'tkfont.create'
fun.restrict.BC: no visible global function definition for 'tclVar'
fun.restrict.BC: no visible global function definition for 'tclvalue'
fun.restrict.BC: no visible global function definition for 'tkbutton'
fun.restrict.BC: no visible global function definition for
  'tkconfigure'
fun.restrict.BC : <anonymous>: no visible global function definition
  for 'tclvalue<-'
fun.restrict.BC: no visible global function definition for 'tkbind'
fun.restrict.BC: no visible global function definition for 'tkgrid'
fun.restrict.BC: no visible global function definition for 'tklabel'
fun.restrict.BC: no visible global function definition for
  'tkwm.geometry'
fun.restrict.BC: no visible global function definition for
  'tkgrid.rowconfigure'
fun.restrict.BC: no visible global function definition for 'tkfocus'
fun.restrict.BC: no visible global function definition for
  'tkwait.variable'
fun.restrict.BC: no visible global function definition for 'tkdestroy'
fun.set.variables: no visible global function definition for
  'tktoplevel'
fun.set.variables: no visible global function definition for
  'tkwm.geometry'
fun.set.variables: no visible global function definition for
  'tkwm.title'
fun.set.variables: no visible global function definition for 'tkframe'
fun.set.variables: no visible global function definition for
  'tkfont.create'
fun.set.variables: no visible global function definition for 'tkgrid'
fun.set.variables: no visible global function definition for 'tklabel'
fun.set.variables: no visible global function definition for 'tclVar'
fun.set.variables: no visible global function definition for 'tclvalue'
fun.set.variables : func.1: no visible global function definition for
  'tclvalue<-'
fun.set.variables: no visible global function definition for 'tkbutton'
fun.set.variables: no visible global function definition for
  'tkconfigure'
fun.set.variables: no visible global function definition for
  'tkgrid.configure'
fun.set.variables: no visible global function definition for
  'tkgrid.columnconfigure'
fun.set.variables : <anonymous>: no visible global function definition
  for 'tclvalue<-'
fun.set.variables: no visible global function definition for 'tkbind'
fun.set.variables: no visible global function definition for
  'tkwait.variable'
fun.set.variables: no visible global function definition for
  'tkdestroy'
hist.MARtop: no visible global function definition for 'dev.new'
hist.MARtop: no visible global function definition for 'hist'
hist.MARtop: no visible global function definition for 'points'
plot.MAR: no visible global function definition for 'par'
plot.MAR: no visible global function definition for 'layout'
plot.MAR: no visible global function definition for 'palette'
plot.MAR: no visible global function definition for 'barplot'
plot.MAR: no visible global function definition for 'abline'
plot.MAR: no visible global function definition for 'points'
plot.MAR: no visible global function definition for 'box'
plot.MAR: no visible global function definition for 'plot'
plot.MAR: no visible global function definition for 'text'
plot.MAR: no visible global function definition for 'dev.new'
plot.MAR: no visible global function definition for 'dev.set'
plot.MAR: no visible global function definition for 'dev.prev'
plot.MARtop: no visible global function definition for 'par'
plot.MARtop: no visible global function definition for 'layout'
plot.MARtop: no visible global function definition for 'palette'
plot.MARtop: no visible global function definition for 'barplot'
plot.MARtop: no visible global function definition for 'abline'
plot.MARtop: no visible global function definition for 'box'
plot.MARtop: no visible global function definition for 'plot'
plot.MARtop: no visible global function definition for 'text'
prepare.data: no visible global function definition for 'aggregate'
prepare.data: no visible global function definition for 'approx'
prepare.data: no visible global function definition for 'na.omit'
prepare.data: no visible global function definition for 'runif'
prepare.data: no visible binding for global variable 'sd'
run.mar: no visible global function definition for 'flush.console'
ss.mar1: no visible global function definition for 'MARSS'
summary.MAR : make.coef.sum: no visible global function definition for
  'aggregate'
Undefined global functions or variables:
  AIC MARSS abline aggregate approx barplot box dev.new dev.prev
  dev.set flush.console glm hist layout na.omit palette par plot points
  runif sd stack tclVar tclvalue tclvalue<- text tkbind tkbutton
  tkconfigure tkdestroy tkfocus tkfont.create tkframe tkgrid
  tkgrid.columnconfigure tkgrid.configure tkgrid.rowconfigure tklabel
  tktoplevel tkwait.variable tkwm.geometry tkwm.title ttkprogressbar
  write.table
Consider adding
  importFrom("grDevices", "dev.new", "dev.prev", "dev.set", "palette")
  importFrom("graphics", "abline", "barplot", "box", "hist", "layout",
             "par", "plot", "points", "text")
  importFrom("stats", "AIC", "aggregate", "approx", "glm", "na.omit",
             "runif", "sd")
  importFrom("utils", "flush.console", "stack", "write.table")
to your NAMESPACE file.