Well, my ftp server accepts weird characters including space, as i had never had any problem uploading them with Cyberduck.
Anyway, if thats the case GS should mention it, and give us the possibility to disable this function.
I started using this feature of AC, because its really handy to have everything done automatically (publishing-uploading-sending emails), but its really frustrating that the file names on the email do not correspond to the file names uploaded!
Mac OSX 13.6.6 | AC 27 INT 5003 FULL