[Xitami] can't run "exec" from shtml

[Jill Heske]

I have an index.shtml file in my default webpages dir.  It contains one
line:

   <!--#exec cmd="./cgi-bin/ip2block.exe"-->

I know ip2block.exe is accessible and works.  I can run it directly from my
browser.  I have even tried a full reference to the exe

   <!--#exec cmd="http://192.x.x.x/cgi-bin/ip2block.exe"-->

In every case I get the same response

	p>[xitami SSI Error: ]

which I recognize as Xitami's default SSI error message.  However, the %s is
blank (no error message).  The access log shows the file being accessed
successfully, and the error log shows nothing.

Anyone know how to track down this problem?  Thanks very much.

Jill