glmpath: no visible binding for global variable ‘binomial’
glmpath: no visible global function definition for ‘gaussian’
glmpath: no visible global function definition for ‘binomial’
glmpath: no visible global function definition for ‘poisson’
oblique.tree : node.split.continuous.oblique: no visible global
  function definition for ‘glm.fit’
oblique.tree : node.split.continuous.oblique: no visible global
  function definition for ‘binomial’
oblique.tree : node.split.continuous.oblique: no visible global
  function definition for ‘predict’
oblique.tree : node.split.continuous.oblique: no visible global
  function definition for ‘glm’
oblique.tree : node.split.continuous.oblique: no visible global
  function definition for ‘step’
oblique.tree: no visible global function definition for ‘model.extract’
plot.trim.sequence: no visible global function definition for ‘plot’
plot.trim.sequence: no visible global function definition for ‘box’
plot.trim.sequence: no visible global function definition for ‘axis’
plot.trim.sequence: no visible global function definition for ‘par’
predict.glmpath: no visible global function definition for ‘step’
predict.glmpath: no visible global function definition for ‘approx’
predict.oblique.tree: no visible global function definition for
  ‘model.frame’
predict.oblique.tree: no visible global function definition for
  ‘as.formula’
predict.oblique.tree: no visible global function definition for
  ‘model.extract’
prune.oblique.tree: no visible global function definition for
  ‘model.frame’
prune.oblique.tree: no visible global function definition for
  ‘as.formula’
prune.oblique.tree: no visible global function definition for
  ‘model.response’
trim.oblique.tree: no visible global function definition for
  ‘model.frame’
trim.oblique.tree: no visible global function definition for
  ‘as.formula’
trim.oblique.tree: no visible global function definition for
  ‘model.response’
Undefined global functions or variables:
  approx as.formula axis binomial box gaussian glm glm.fit
  model.extract model.frame model.response par plot poisson predict
  step
Consider adding
  importFrom("graphics", "axis", "box", "par", "plot")
  importFrom("stats", "approx", "as.formula", "binomial", "gaussian",
             "glm", "glm.fit", "model.extract", "model.frame",
             "model.response", "poisson", "predict", "step")
to your NAMESPACE file.