Yes, Spark VDM and Spark 1.4.1 are two different applications.
Spark VDM is a software only product, containing 30 vintage drum machines models (combination of analog modeling and sampling), and is authorized via the eLicenser system.
Spark 1.4.1 is the latest software update for Spark CDM (Creative Drum Machiine, supplied with the Spark hardware controller), containing over 80 kits (drum machines, acoustic drums, hiphop/r&b sets, ...), and it uses another authorization system than eLicenser. Without an specific activation (provide when you register the serial included with the hardware controller), it can only run in Demo mode (no Save nor Import/Export functions).
If you purchased Spark VDM, you received and eLicenser activation code when you registered your software serial number. This only allows you to use the Spark VDM software.