search for: sclassextension

...The build failed with the following error message: ... dumping R code in package 'methods' Saving namespace image ... initializing class and method definitions now ...Error in makePrototypeFromClassDef(properties, ClassDef, immediate, where) : in making the prototype for class "SClassExtension" elements of the prototype failed to match the corresponding slot class: coerce (class ?character? ), test (class ?character? ), replace (class ?character? ), simple (class ?character? ), dataPart (class ?character? ) Error: .onLoad failed in 'loadNamespace' for 'methods' Execu...

I am having difficulty using in 1.8.0 an object created under 1.7.1. The following is a 'minimal example' of the issue. First the part in 1.7.1: > require("methods") [1] TRUE > setClass("foo",representation("vector",label="character")) [1] "foo" > x <- new("foo",1:2,label=LETTERS[1:2]) >