The unregistered version is stripped down.
Registering you will get the full version with the following additional features:
Also, after registration you will have the right to receive tech support (writing your questions to e-code@e-code.mastak.com). Read the FAQ before asking questions.
To register follow this link: http://www.brainriver.com/register.htm?pid=F43623625364512
Currently registration costs $29.