contour.all.nlreg.profiles: no visible global function definition for
  ‘par’
contour.all.nlreg.profiles: no visible global function definition for
  ‘split.screen’
contour.all.nlreg.profiles: no visible global function definition for
  ‘close.screen’
contour.all.nlreg.profiles: no visible global function definition for
  ‘qchisq’
contour.all.nlreg.profiles: no visible global function definition for
  ‘qnorm’
contour.all.nlreg.profiles: no visible global function definition for
  ‘screen’
contour.all.nlreg.profiles: no visible global function definition for
  ‘plot’
contour.all.nlreg.profiles: no visible global function definition for
  ‘lines’
contour.all.nlreg.profiles: no visible global function definition for
  ‘abline’
contour.all.nlreg.profiles: no visible global function definition for
  ‘smooth.spline’
contour.all.nlreg.profiles: no visible global function definition for
  ‘predict’
contour.all.nlreg.profiles: no visible global function definition for
  ‘spline’
contour.all.nlreg.profiles: no visible global function definition for
  ‘points’
contour.all.nlreg.profiles: no visible global function definition for
  ‘contour’
mpl.nlreg: no visible global function definition for ‘resid’
mpl.nlreg: no visible global function definition for ‘optim’
nlreg: no visible global function definition for ‘nls.control’
nlreg: no visible global function definition for ‘residuals’
nlreg: no visible global function definition for ‘coef’
nlreg: no visible global function definition for ‘as.formula’
nlreg: no visible global function definition for ‘fitted’
nlreg: no visible global function definition for ‘optim’
nlreg.diag: no visible global function definition for ‘lm’
nlreg.diag: no visible global function definition for ‘coef’
nlreg.diag: no visible global function definition for ‘update’
nlreg.diag.plots: no visible global function definition for ‘plot’
plot.all.nlreg.profiles: no visible global function definition for
  ‘par’
plot.all.nlreg.profiles : plot.prof: no visible global function
  definition for ‘qnorm’
plot.all.nlreg.profiles : plot.prof: no visible global function
  definition for ‘matplot’
plot.all.nlreg.profiles : plot.prof: no visible global function
  definition for ‘lines’
plot.all.nlreg.profiles : plot.prof: no visible global function
  definition for ‘abline’
plot.nlreg.contours: no visible global function definition for ‘qchisq’
plot.nlreg.contours: no visible global function definition for ‘qnorm’
plot.nlreg.contours: no visible global function definition for ‘par’
plot.nlreg.contours: no visible global function definition for
  ‘split.screen’
plot.nlreg.contours: no visible global function definition for
  ‘close.screen’
plot.nlreg.contours: no visible global function definition for ‘screen’
plot.nlreg.contours: no visible global function definition for ‘plot’
plot.nlreg.contours: no visible global function definition for ‘lines’
plot.nlreg.contours: no visible global function definition for ‘abline’
plot.nlreg.contours: no visible global function definition for ‘points’
plot.nlreg.contours: no visible global function definition for
  ‘contour’
plot.nlreg.diag: no visible global function definition for ‘menu’
plot.nlreg.diag: no visible global function definition for ‘par’
plot.nlreg.diag: no visible global function definition for
  ‘close.screen’
plot.nlreg.diag: no visible global function definition for
  ‘split.screen’
plot.nlreg.diag: no visible global function definition for ‘screen’
plot.nlreg.diag: no visible global function definition for ‘plot’
plot.nlreg.diag: no visible global function definition for ‘qnorm’
plot.nlreg.diag: no visible global function definition for ‘ppoints’
plot.nlreg.diag: no visible global function definition for ‘abline’
plot.nlreg.diag: no visible global function definition for ‘identify’
plot.nlreg.diag: no visible global function definition for ‘text’
plot.nlreg.profile: no visible global function definition for ‘qnorm’
plot.nlreg.profile: no visible global function definition for ‘plot’
plot.nlreg.profile: no visible global function definition for ‘lines’
plot.nlreg.profile: no visible global function definition for ‘abline’
plot.nlreg.profile: no visible global function definition for ‘legend’
plot.nlreg.profile: no visible global function definition for ‘locator’
plot.nlreg.profile: no visible global function definition for ‘par’
print.summary.nlreg: no visible global function definition for
  ‘printCoefmat’
profile.nlreg: no visible global function definition for ‘resid’
profile.nlreg: no visible global function definition for ‘spline’
summary.all.nlreg.profiles: no visible global function definition for
  ‘qnorm’
summary.all.nlreg.profiles : getCI: no visible global function
  definition for ‘predict’
summary.all.nlreg.profiles : getCI: no visible global function
  definition for ‘smooth.spline’
summary.nlreg: no visible global function definition for ‘pnorm’
summary.nlreg.profile: no visible global function definition for
  ‘qnorm’
summary.nlreg.profile: no visible global function definition for
  ‘predict’
summary.nlreg.profile: no visible global function definition for
  ‘smooth.spline’
Undefined global functions or variables:
  abline as.formula close.screen coef contour fitted identify legend
  lines lm locator matplot menu nls.control optim par plot pnorm points
  ppoints predict printCoefmat qchisq qnorm resid residuals screen
  smooth.spline spline split.screen text update
Consider adding
  importFrom("graphics", "abline", "close.screen", "contour", "identify",
             "legend", "lines", "locator", "matplot", "par", "plot",
             "points", "screen", "split.screen", "text")
  importFrom("stats", "as.formula", "coef", "fitted", "lm",
             "nls.control", "optim", "pnorm", "ppoints", "predict",
             "printCoefmat", "qchisq", "qnorm", "resid", "residuals",
             "smooth.spline", "spline", "update")
  importFrom("utils", "menu")
to your NAMESPACE file.