Various programs temporarily use the directories "c:\windows\temp", 
"c:\dos\temp" or "c:\temp" during installation.  If too many files 
accumulate in these temporary directories, this error may occur.  

To correct this error, delete any temp files in those directories: 

1) From DOS, type: 

     c:\windows\desktop>set

2) A list of environment variables will be displayed, for example: 

     TMP=C:\WINDOWS\TEMP
     TEMP=C:\WINDOWS\TEMP
     winbootdir=C:\WINDOWS
     COMSPEC=C:\WINDOWS\COMMAND.COM
     PROMPT=$P$G
     windir=C:\WINDOWS
     BLASTER=A220 I5 D1 T4
     PATH=C:\PROGRA~1\MICROS~2\OFFICE;C:\WINDOWS;C:\WIN OWS\COMMAND;C:\DOS;

3) Note the line that begins with "TMP=" or "TEMP=".  This is the folder 
   that stores files temporarily.  Generally, the folder indicated in this 
   line should be empty.  

   Note: If the folder is "c:\dos", "c:\" or "c:\windows", *do not* remove 
         all files!  Instead, you need to specify another temp directory. 
         This can be done by adding the following line to the "autoexec.bat"
         file:

         set TEMP=c:\windows\temp

4) The above line can also be typed from the DOS command line.  This will
   change the temp folder for the current session.  You can then proceed 
   with installation.  Provided the temp directory is relatively empty, 
   the installation should work.