[R] error when calling debugger()

[Vadim Ogranovich]

Hi,

I am getting an error message when I am trying to run the debugger() on
the last.dump. The debugger() stops after I make a selection. Could
someone please suggest what it might mean? The R log is included below.
This is R-1.8.1 on RH 7.3.

Thanks, Vadim

> load("last.dump.rda")
> debugger(last.dump)
Message:  Error in split(x, f) : Group length is 0 but data length > 0
Available environments had calls:
1: try({
2: local(for (ticker in univ$ticker) {
3: eval.parent(substitute(eval(quote(expr), envir)))
4: eval(expr, p)
5: eval(expr, envir, enclos)
6: eval(quote(for (ticker in univ$ticker) {
7: eval(expr, envir, enclos)
8: local(for (i in l) {
9: eval.parent(substitute(eval(quote(expr), envir)))
10: eval(expr, p)
11: eval(expr, envir, enclos)
12: eval(quote(for (i in l) {
13: eval(expr, envir, enclos)
14: accumulate(accu, lapply(split(seq(length(key)), key), function(i) {
15: lapply(split(seq(length(key)), key), function(i) {
16: split(seq(length(key)), key)
17: split.default(seq(length(key)), key)

Enter an environment number, or 0 to exit  Selection: 1
Error in get(.obj, envir = dump[[.selection]]) : 
	recursive default argument reference