Unless you are referring to several users with different account names (past and/or present accounts) had logged into your machine previously?
Yes, but I cleaned these up today so no longer get invalid name errors.
On the centre panel, look for the profile in question and double-click to open it. Under the General tab, verify if the account name under ".... use the following user account" is correct.
Looks like when I schedule from SyncBackPro and they don't run, then when I check these in Task Scheduler, they appear under a different Computer Name-User Name than what I an currently logged in as.
Oddly, I have seen the Windows Clock jump ahead by 5 minutes or so when SyncBackPro tries to run a scheduled backup and fails.
Still checking on my end.