It's not clear from your description where the files are being copied from with SyncBackPro. Are you copying files from an FTP server? Unfortunately there's no way to know when the file is completed and there's no FTP function to lock a file.
Is the file being created at the same time everyday? Is it not possible to simply run the profile at a certain time, i.e. when you know for sure the file will have been completely created.
Is the file being created at the same time everyday? Is it not possible to simply run the profile at a certain time, i.e. when you know for sure the file will have been completely created.