Some fixes have been made to check a few errors better & to report something like the correct error message in other cases. - setMethod will now refuse to set a method for a primitive function for a basic class ("[<-" for "matrix", for example). Previously the method was set but never dispatched. (For a few days, the change prohibited some valid methods for operators, with one basic operand, but that case should be fixed now. Thanks, Vince.) - a number of functions such as getMethods, showMethods, etc. should give better error messages if presented with arguments they don't understand. There are some additional low-level checks in various places that should replace error messages about objects at the C level with no slots by more comprehensible information. Please report any glitches that seem to have been introduced. John -- John M. Chambers jmc@bell-labs.com Bell Labs, Lucent Technologies office: (908)582-2681 700 Mountain Avenue, Room 2C-282 fax: (908)582-3340 Murray Hill, NJ 07974 web: http://www.cs.bell-labs.com/~jmc