Warning: class "NULL" is defined (with package slot ‘methods’) but no metadata object found to revise superClass information---not exported?  Making a copy in package ‘.GlobalEnv’
Warning: subclass ".NULL" of class "NULL" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: class "character" is defined (with package slot ‘methods’) but no metadata object found to revise superClass information---not exported?  Making a copy in package ‘.GlobalEnv’
Warning: subclass "signature" of class "character" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: subclass "className" of class "character" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: subclass "ObjectsWithPackage" of class "character" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: subclass "signature" of class "character" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: subclass "className" of class "character" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: subclass "ObjectsWithPackage" of class "character" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: class "numeric" is defined (with package slot ‘methods’) but no metadata object found to revise superClass information---not exported?  Making a copy in package ‘.GlobalEnv’
Warning: subclass "integer" of class "numeric" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: subclass "factor" of class "numeric" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: subclass ".NULL" of class "NULL" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: subclass "integer" of class "numeric" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: subclass "factor" of class "numeric" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: subclass ".NULL" of class "NULL" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: class "data.frame" is defined (with package slot ‘methods’) but no metadata object found to revise superClass information---not exported?  Making a copy in package ‘.GlobalEnv’
Warning: subclass ".NULL" of class "NULL" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: class "list" is defined (with package slot ‘methods’) but no metadata object found to revise superClass information---not exported?  Making a copy in package ‘.GlobalEnv’
Warning: subclass "namedList" of class "list" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: subclass "listOfMethods" of class "list" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: class "vector" is defined (with package slot ‘methods’) but no metadata object found to revise superClass information---not exported?  Making a copy in package ‘.GlobalEnv’
Warning: subclass "logical" of class "vector" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: subclass "complex" of class "vector" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: subclass "integer" of class "vector" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: subclass "raw" of class "vector" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: subclass "expression" of class "vector" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: subclass "structure" of class "vector" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: subclass "array" of class "vector" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: subclass "matrix" of class "vector" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: subclass "signature" of class "vector" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: subclass "className" of class "vector" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: subclass "ObjectsWithPackage" of class "vector" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: subclass "ts" of class "vector" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: subclass "mts" of class "vector" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: subclass "factor" of class "vector" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: subclass "namedList" of class "vector" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: subclass "listOfMethods" of class "vector" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: subclass "integer" of class "numeric" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: subclass "factor" of class "numeric" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: subclass "namedList" of class "list" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: subclass "listOfMethods" of class "list" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: class "logical" is defined (with package slot ‘methods’) but no metadata object found to revise superClass information---not exported?  Making a copy in package ‘.GlobalEnv’
Warning: subclass "integer" of class "numeric" is not local and cannot be updated for new inheritance information; consider setClassUnion()
Warning: subclass "factor" of class "numeric" is not local and cannot be updated for new inheritance information; consider setClassUnion()

A namespace must be able to be loaded with just the base namespace
loaded: otherwise if the namespace gets loaded by a saved object, the
session will be unable to start.

Probably some imports need to be declared in the NAMESPACE file.