Help: Backup mysql problem

[mach]

I have the mysql backup utility installed on version 1.2.6 and it all worked fine for months. I recently installed the quickbooks add on. i don't know if this is a factor or not. I did a backup on 5 Aug, now I get this error code.

Result code: 127
ERROR: Could not locate the MYSQLDUMP backup utility. BACKUP FAILED.

the path to MYSQLDump is correct.

The admin/includes/configure.php has all three new admin folder names. Not sure when I changed the admin folder name, but all 3 references are correct

the backups folder is 777

the admin folder is 755

i am using https for admin login, but turned it off for all admin to make sure that wasn't a problem.

Please help. I am out of ideas.

I also re-installed the mysql backup utility, no help