checking Rd cross-references ... WARNING

Dear all
I am getting this strange error when checking my package. Would you
have an idea what causes it?

Thank you
Liviu

* checking Rd cross-references ... WARNING
Error in .find.package(package, lib.loc) :
  there is no package called 'KernSmooth'
Calls: <Anonymous> -> lapply -> FUN -> .find.package
Execution halted



  

sessionInfo ()
    

R version 2.10.0 (2009-10-26)
  

x86_64-pc-linux-gnu

locale:
 [1] LC_CTYPE=en_GB.UTF-8       LC_NUMERIC=C
LC_TIME=en_GB.UTF-8        LC_COLLATE=en_GB.UTF-8
 [5] LC_MONETARY=C              LC_MESSAGES=en_GB.UTF-8
LC_PAPER=en_GB.UTF-8       LC_NAME=C
 [9] LC_ADDRESS=C               LC_TELEPHONE=C
LC_MEASUREMENT=en_GB.UTF-8 LC_IDENTIFICATION=C

attached base packages:
 [1] datasets  grid      splines   graphics  stats     utils
grDevices tcltk     methods   base

other attached packages:
 [1] fortunes_1.3-6           RcmdrPlugin.HH_1.1-25    HH_2.1-32
         leaps_2.9
 [5] multcomp_1.1-2           mvtnorm_0.9-8            lattice_0.17-26
         RcmdrPlugin.sos_0.1-0
 [9] tcltk2_1.1-1             RcmdrPlugin.Export_0.3-0 Hmisc_3.7-0
         survival_2.35-7
[13] xtable_1.5-6             Rcmdr_1.5-4              car_1.2-16
         relimp_1.0-1
[17] sos_1.2-4                brew_1.0-3               hints_1.0.1-1

loaded via a namespace (and not attached):
[1] cluster_1.12.1