Username missing from VVScheduler admin prompt

[jfischer12]

When making changes to tasks in VVScheduler, I receive the password prompt but there is NO username shown in the "name" field, and the field is not accessible for user input nor is the "..." enabled for user selection. The password is left blank, but when I enter the Windows password for the account I am logged in as, it gets rejected.

I have created a new administrative user profile (different name) and have the same problem.

How do I get VVSchedule to recognize the correct/current username?

This is a new install of Vice Versa Pro 2.5 Pro on a Dell Latitude E6420 running Windows 7 Ultimate. I have tried both the 32 and 64-bit versions.
Thanks,
JF