Error groupChromPeaks

Hello,
I get an (almost instant) error when launching groupChromPeaks right after merge.

Here is the error message :
code for methods in class "Rcpp_Ramp" was not checked for suspicious field assignments (recommended package 'codetools' not available?)
code for methods in class "Rcpp_Ramp" was not checked for suspicious field assignments (recommended package 'codetools' not available?)
code for methods in class "Rcpp_Pwiz" was not checked for suspicious field assignments (recommended package 'codetools' not available?)
code for methods in class "Rcpp_Pwiz" was not checked for suspicious field assignments (recommended package 'codetools' not available?)
code for methods in class "Rcpp_Ident" was not checked for suspicious field assignments (recommended package 'codetools' not available?)
code for methods in class "Rcpp_Ident" was not checked for suspicious field assignments (recommended package 'codetools' not available?)
Error: bad restore file magic number (file may be corrupted) -- no data loaded
In addition: Warning message:
file 'dataset_5073424.dat' has magic number 'RDX3'

  • Use of save versions prior to 2 is deprecated *
    Execution halted

Many thanks in advance,
Sylvain