suexec policy error

Yesterday I modified my .htaccess file, attempting to consolidate the www and non-www landing pages of my site, referring all requests to the non-www URL.  Unfortunately, that unexpectedly interfered with my online booking engine, which was configured to load only pages with the www prefix.  I deleted the revised .htaccess, but the online booking engine is stalling over a suexec policy error.  Here is the error log (I don't have access to the suexec log):

[Thu Sep 19 20:10:16 2013] [client 67.49.152.154] suexec policy violation: see suexec log for more details, referer: http://www.mauitradewinds.com/RezEasy/booking_data.html
[Thu Sep 19 20:10:16 2013] [client 67.49.152.154] Premature end of script headers: rsv50std.cgi, referer: http://www.mauitradewinds.com/RezEasy/booking_data.html
[Thu Sep 19 20:10:16 2013] [debug] mod_deflate.c(615): [client 67.49.152.154] Zlib: Compressed 636 to 384 : URL /cgi-bin/rsv50std.cgi, referer: http://www.mauitradewinds.com/RezEasy/booking_data.html

I have set permissions for rsv50std.cgi and booking_data.html to 755, but the issue persists.