Carol:

When you see the version number in Help | About there is a date code as well. It must match the service pack you installed 20150903, otherwise something is wrong.

If you open Help | Readme | Enhancements & Revisions you will see the release notes by release date. 20150903 doesn't say anything about being an upgrade, instead it just lists the things that have been fixed.
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Douglas Dickie
AccSys Solutions Inc
Phone: 1.888.534.4344
ddickie@accsyssolutions.com