[R] Explanation of Error Diagnostics

[graham lawrence]

Hi,

Is there any documentation to explain R's error diagnostics, e.g. messages 
like

>source("../src/sources/routine.R")
Read 8 records
Read 2 records
Error in "[<-"(*tmp*, !test, value = rep(no, length = length(ans))[!test]) :
        incompatible types

The nature of the problem incompatible types, is clear; but I'm more 
interested in its location, and feel that the cryptic elements
"[<-"(*tmp*, !test, value = rep(no, length = length(ans))[!test])
probably hold the key to finding it.

Thanks in advance for your help,
graham lawrence

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