Problem installing Naccess v2.1 software for LINUX RedHat

[mcbskt <mcbskt $#at#$ mcbsgs1.imcb.nus.edu.sg>]

 I tried to install Naccess ( software for calculating solvent
 accessibility of protein) in a LINUX RedHat 5.1.
 The following is some information for diagnosis:
 Anyone with similar problem before and had solved it, please advice.
 Thank you.
 Seow, Kah-Tong
 IMCB, NUS
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 The compiler in Linux RedHat is g77
 $ naccess installation program
 $ ----------------------------
 $ installing naccess in directory /naccess2.1.1
 $ created naccess - cshell script
 $ compiling accall.f
 $ done
 Output of csh install.scr with modification in install.scr to  f77 -Wall
 accall.f: In program `accall':
 accall.f:71: warning: unused variable `hgen'
 accall.f:65: warning: unused variable `reslabel'
 accall.f:62: warning: unused variable `b'
 accall.f:43: warning: unused variable `outputtype'
 accall.f:270: warning: `nchain' might be used uninitialized in this
 function
 accall.f: In subroutine `solva':
 accall.f:740: warning: unused variable `c'
 accall.f: In subroutine `vanin':
 accall.f:1257: warning: unused variable `ok'
 accall.f:1255: warning: unused variable `aa4'
 Screen output  of naccess xxx.pdb
 ********************************
 naccess: using vdw.radii in local directory
 naccess: using STD FILE in local directory
 startio: error in format
 apparent state: unit 4 named .log
 last format: (a,i,a,i,a)
 lately writing sequential formatted external IO
 Abort (core dumped)
 content of xxx.log for the above xxx.pdb
 **********************************
  ACCALL - Accessibility calculations