Full_Name: Seth Roberts Version: 2.6.0 OS: Windows XP Submission from: (NULL) (71.139.162.236) Using getGraphicsEvent produces stack imbalance warnings. This started after I installed 2.6.0; it did not happen with 2.5.1. Running the example given in the user manual (retrieved via ?getGraphicsEvent) produces the following errors: Key <2> Key <1> Buttons 0 at 0.991317 0.9942029 Warning: stack imbalance in 'getGraphicsEvent', 7 then 17 Warning: stack imbalance in '.Internal', 6 then 16 [1] "Done" I wrote the following program: function () {plot(1:5) getGraphicsEvent(onKeybd=get.key) } get.key function(key){key} running the program, switching to the graphics window and typing "4" produced: Waiting for input Warning: stack imbalance in 'getGraphicsEvent', 13 then 14 Warning: stack imbalance in '.Internal', 12 then 13 Warning: stack imbalance in '{', 6 then 7 [1] "4"