Hi,

I am trying to run 2 versions of R, 2.7.2. and 2.9.0, and am trying to use R
Switch on Mac OS Leopard 10.5.7

I have been following the second step and removing
/Library/Receipts/R-framework prior to installation of 2.9.0

Upon installing 2.9.0, 2.9.0 runs OK, but if I select 2.7.2 on Rswitch, the
following error results on startup (ERROR 1, below) and R crashes.

Upon installing 2.7.2 (after similarly removing R-framework), and choosing
R.2.9.0 on Rswitch, a slightly different error appears.

Any advice would be very much appreciated.

Regards,
Min-Han

Error 1

 *** caught segfault ***
address 0x24048910, cause 'memory not mapped'

Traceback:
 1: .Call("R_initMethodDispatch", as.environment(where), PACKAGE =
"methods")
 2: initMethodDispatch(where)
 3: ..First.lib(libname, pkgName, env)
 4: fun(...)
 5: doTryCatch(return(expr), name, parentenv, handler)
 6: tryCatchOne(expr, names, parentenv, handlers[[1]])
 7: tryCatchList(expr, classes, parentenv, handlers)
 8: tryCatch(expr, error = function(e) {    call <- conditionCall(e)    if
(!is.null(call)) {        if (identical(call[[1]],
quote(doTryCatch)))             call <- sys.call(-4)        dcall <-
deparse(call)[1]        prefix <- paste("Error in", dcall, ": ")        LONG
<- 75        msg <- conditionMessage(e)        sm <- strsplit(msg,
"\n")[[1]]        if (14 + nchar(dcall, type = "w") + nchar(sm[1], type =
"w") >             LONG)             prefix <- paste(prefix, "\n  ", sep =
"")    }    else prefix <- "Error : "    msg <- paste(prefix,
conditionMessage(e), "\n", sep = "")    .Internal(seterrmessage(msg[1]))
if (!silent && identical(getOption("show.error.messages"),         TRUE))
{        cat(msg, file = stderr())
.Internal(printDeferredWarnings())    }    invisible(structure(msg, class =
"try-error"))})
 9: try({    fun(...)    NULL})
10: runHook(".onLoad", package, env, package.lib, package)
11: loadNamespace(package, c(which.lib.loc, lib.loc), keep.source =
keep.source)
12: doTryCatch(return(expr), name, parentenv, handler)
13: tryCatchOne(expr, names, parentenv, handlers[[1]])
14: tryCatchList(expr, classes, parentenv, handlers)
15: tryCatch(expr, error = function(e) {    call <- conditionCall(e)    if
(!is.null(call)) {        if (identical(call[[1]],
quote(doTryCatch)))             call <- sys.call(-4)        dcall <-
deparse(call)[1]        prefix <- paste("Error in", dcall, ": ")        LONG
<- 75        msg <- conditionMessage(e)        sm <- strsplit(msg,
"\n")[[1]]        if (14 + nchar(dcall, type = "w") + nchar(sm[1], type =
"w") >             LONG)             prefix <- paste(prefix, "\n  ", sep =
"")    }    else prefix <- "Error : "    msg <- paste(prefix,
conditionMessage(e), "\n", sep = "")    .Internal(seterrmessage(msg[1]))
if (!silent && identical(getOption("show.error.messages"),         TRUE))
{        cat(msg, file = stderr())
.Internal(printDeferredWarnings())    }    invisible(structure(msg, class =
"try-error"))})
16: try({    ns <- loadNamespace(package, c(which.lib.loc, lib.loc),
keep.source = keep.source)    dataPath <- file.path(which.lib.loc, package,
"data")    env <- attachNamespace(ns, pos = pos, dataPath = dataPath)})
17: library(package, lib.loc = lib.loc, character.only = TRUE,
logical.return = TRUE,     warn.conflicts = warn.conflicts, keep.source =
keep.source,     version = version)
18: require("methods", quietly = TRUE, warn.conflicts = FALSE,
character.only = TRUE,     save = FALSE)
19: .OptRequireMethods()

Possible actions:
1: abort (with core dump, if enabled)
2: normal R exit
3: exit R without saving workspace
4: exit R saving workspace

ERROR 2

Error in .Internal(grepl(as.character(pattern), x, ignore.case, extended,  :

  no internal function "grepl"
Error in .Internal(grepl(as.character(pattern), x, ignore.case, extended,  :

  no internal function "grepl"

 *** caught segfault ***
address 0xc0000086, cause 'memory not mapped'

Possible actions:
1: abort (with core dump, if enabled)
2: normal R exit
3: exit R without saving workspace
4: exit R saving workspace
Selection:

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