r - Problems with source() command after loading XML package -

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after loading xml package source() command quits following error:

> require(xml) lade nötiges paket: xml > source ("test.r") error in source("test.r") :    7 arguments passed .internal(identical) requires 6

if execute source() before loading package works fine. idea how fix this?

more information: 

> traceback() 2: source("test.html") 1: source("test.html")  > sessioninfo() r version 2.15.0 (2012-03-30) platform: x86_64-pc-mingw32/x64 (64-bit)  locale: [1] lc_collate=german_austria.1252  lc_ctype=german_austria.1252    lc_monetary=german_austria.1252 lc_numeric=c                    [5] lc_time=german_austria.1252      attached base packages: [1] stats     graphics  grdevices utils     datasets  methods   base       other attached packages: [1] xml_3.9-4.1  loaded via namespace (and not attached): [1] tools_2.15.0

thx, fabian

edit: seems work r 2.15.1


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