Error(s) in re-building vignettes:
--- re-building ‘rlmer.Rnw’ using Sweave
Loading required package: robustlmm
Loading required package: lme4
Loading required package: Matrix
Loading required package: ggplot2
Warning in compare(fmUncontam, fm, rfm, rfm2, rfm3, show.rho.functions = FALSE) :
  Comparison for objects not fitted to the same dataset
Loading required package: reshape2
Error: processing vignette 'rlmer.Rnw' failed with diagnostics:
Running 'texi2dvi' on 'rlmer.tex' failed.
LaTeX errors:
! LaTeX Error: Command \U already defined.
               Or name \end... illegal, see p.192 of the manual.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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! LaTeX Error: Command \U unavailable in encoding T1.

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--- failed re-building ‘rlmer.Rnw’

SUMMARY: processing the following file failed:
  ‘rlmer.Rnw’

Error: Vignette re-building failed.
Execution halted