It's just the content file of a debian (or ubuntu) package. A debian package consist on a DEBIAN folder containing a content file and a postinst file. Other folders contains the real files to install. The content package is just a description of the package as you can see. The lines are pretty self-explanatory :
Package: cura # package name
Version: 14.01 # version number
Section: misc # section of the package
Priority: optional
Architecture: amd64 # you can also put all here
Essential: no
Depends: python-wxgtk2.8, python-opengl, python-serial, python-numpy # other packages it depends on
Maintainer: Daid <daid303@gmail.com>
Provides: cura
Installed-Size: 10000 # doesn't have to be exact
Description: Cura is a full software solution for 3D printing,
aimed at RepRaps and the Ultimaker. It's free software payed for
and maintained by Ultimaker.
Can you be more specific on the tools you are using and the error ?