If you see the whole installation history, I started with 1.5 on SAP BI 4.1.
Making the upgrade to 4.2 and then AFTER this the try to upgrade DS too it fails.
So my second try (I did a snapshot of the VM) started with the UNINSTALL of DS 1.5 and then the upgrade from 4.1 to 4.2. After I started the install of DS 1.6 as new installation, but the same error came up.
Seems to be some odd information in the registry ore in one of the million JARs and XMLs ...
There were announced the next service pack for DS, right?
What could I do?