Premature end of script headers: ...\n ...missing required file to process

my configurations is
-eruby 0.9.8 http://www.dm4lab.to/~usa/ruby/index_en.html
(cgi-bin/eruby.exe)
-winxp without servicepacks
-apache 1.3.27

http.conf extract
ScriptAlias /cgi-bin/ "D:/Apache Group/Apache/cgi-bin/"
Action application/x-httpd-eruby "/cgi-bin/eruby.exe"
AddType application/x-httpd-eruby .rhtml

request result

···

Internal Server Error
The server encountered an internal error or misconfiguration and was unable
to complete your request.
Please contact the server administrator, admin@mshome.net and inform them of
the time the error occurred, and anything you might have done that may have
caused the error.

More information about this error may be available in the server error log.



Apache/1.3.27 Server at 127.0.0.1 Port 80

Does anybody know the problem???