Install multiple versions of R on Mac

Dear expeRts,

I would like to run R 2.13 and R 2.14 on a MacBook Pro (2.53 GHz Intel Core 2 Duo, 4 GB 1067 MHz DDR3) with Mac OS X 10.6.8. I installed Rswitch to switch between the two versions. On installing the second version (2.14), I executed
sudo pkgutil --forget org.r-project.R.Leopard.fw.pkg
in the Terminal as suggested on the installation process. Then I finished the installation. 2.14 runs great (64-bit), but when I switch to R 2.13 and start R, I get the output below.

What did I do wrong?

Note: I previously had only R 2.14 running. Then I installed R 2.13 (because some things are not available for 2.14). On the installation I missed the fact that R 2.14 is not available anymore [I missed the note on using pkgutil...], so I only had R 2.13 (also running fine). After that I downloaded R 2.14 and executed the pkgutil command during the installation process. I'm not sure if this matters (I guess not, since that's probably the more typical way [first having 2.13 installed and then 2.14 :-)]).

Cheers,

Marius


 *** caught segfault ***
address 0x54d8, 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[[1L]])
 7: tryCatchList(expr, classes, parentenv, handlers)
 8: tryCatch(fun(...), error = identity)
 9: runHook(".onLoad", package, env, package.lib, package)
10: loadNamespace(package, c(which.lib.loc, lib.loc), keep.source = keep.source)
11: doTryCatch(return(expr), name, parentenv, handler)
12: tryCatchOne(expr, names, parentenv, handlers[[1L]])
13: tryCatchList(expr, classes, parentenv, handlers)
14: tryCatch(expr, error = function(e) {    call <- conditionCall(e)    if (!is.null(call)) {        if (identical(call[[1L]], quote(doTryCatch)))             call <- sys.call(-4L)        dcall <- deparse(call)[1L]        prefix <- paste("Error in", dcall, ": ")        LONG <- 75L        msg <- conditionMessage(e)        sm <- strsplit(msg, "\n")[[1L]]        w <- 14L + nchar(dcall, type = "w") + nchar(sm[1L], type = "w")        if (is.na(w))             w <- 14L + nchar(dcall, type = "b") + nchar(sm[1L],                 type = "b")        if (w > LONG)             prefix <- paste(prefix, "\n  ", sep = "")    }    else prefix <- "Error : "    msg <- paste(prefix, conditionMessage(e), "\n", sep = "")    .Internal(seterrmessage(msg[1L]))    if (!silent && identical(getOption("show.error.messages"),         TRUE)) {        cat(msg, file = stderr())        .Internal(printDeferredWarnings())    }    invisible(structure(msg, class = "try-error"))})
15: 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,         deps)})
16: library(package, lib.loc = lib.loc, character.only = TRUE, logical.return = TRUE,     warn.conflicts = warn.conflicts, quietly = quietly, keep.source = keep.source)
17: doTryCatch(return(expr), name, parentenv, handler)
18: tryCatchOne(expr, names, parentenv, handlers[[1L]])
19: tryCatchList(expr, classes, parentenv, handlers)
20: tryCatch(library(package, lib.loc = lib.loc, character.only = TRUE,     logical.return = TRUE, warn.conflicts = warn.conflicts, quietly = quietly,     keep.source = keep.source), error = function(e) e)
21: require("methods", quietly = TRUE, warn.conflicts = FALSE, character.only = TRUE)
22: .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
Selection:
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