Do I have Fixed Assets 3.5/4.0/4.1SE/4.1CE? What is the difference?

The first thing you should should check is your invoice. It will say whether you purchased WorthIT Fixed Assets 3.5, WorthIT Fixed Assets 4.0, WorthIT Fixed Assets 4.1 Standard Edition or WorthIT Fixed Assets 4.1 Concurrent Edition.

WorthIT Fixed Assets 4.0 is not a higher version than 3.5; feature for feature, they are exactly the same. However, WorthIT Fixed Assets 4.0 is for concurrent users which means more than one person can use the same asset book at the same time depending on the numbers of user licenses you have purchased.

WorthIT Fixed Assets 4.1 is the latest version of our software which includes enhanced functionality.  WorthIT Fixed Assets 4.1 Standard Edition is for single-user licenses, and 4.1 concurrent is for multi-user licenses.