R help - Sep 2005 - Need help understanding/resolving build error message

Can someone provide help to resolve this build failure?
 
Thank you,
John Zajd 
 

C:\ConstellaGroup\EPA\RAGG\package>rcmd check RAGG
* checking for working latex ... OK
* using log directory 'C:/ConstellaGroup/EPA/RAGG/package/RAGG.Rcheck'
* using R version 2.1.0, 2005-04-18
* checking for file 'RAGG/DESCRIPTION' ... OK
* this is package 'RAGG' version '1.5'
* checking if this is a source package ... OK
 
installing R.css in C:/ConstellaGroup/EPA/RAGG/package/RAGG.Rcheck
 

---------- Making package RAGG ------------
  adding build stamp to DESCRIPTION
Error in if (regexpr(dep_regexp, dep) == -1) { :
        missing value where TRUE/FALSE needed
Execution halted
make[2]: *** [frontmatter] Error 1
make[1]: *** [all] Error 2
make: *** [pkg-RAGG] Error 2
*** Installation of RAGG failed ***
 
Removing 'C:/ConstellaGroup/EPA/RAGG/package/RAGG.Rcheck/RAGG'
 ERROR
Installation failed.

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