I have exactly the same issue with the following installation:
Design Studio 1.2
Eclipse Kepler SR1 Win32
Java 7 Update 45
I have followed the instructions in the Developer Guide, including registering the sdk.xsd schema and setting the target platform as Design Studio but to no avail.
When I select Run As Eclipse Application for the com.sap.sample.coloredbox project, Design Studio is launched and the splash screen appears briefly and then disappears with no further action.
Here's a link to the Eclipse log file.
The main errors listed seem to be:
!MESSAGE Unable to find feature.xml in directory: C:\Program Files (x86)\SAP BusinessObjects\Design Studio\features\__sap.dir
2014-01-17 12:33:21.430:WARN:oejuc.AbstractLifeCycle:FAILED org.eclipse.jetty.server.nio.SelectChannelConnector$ConnectorSelectorManager@11f124: java.io.IOException: Unable to establish loopback connection
Any suggestions would be appreciated.
Thanks,
Mustafa.