!! Only 32bit JVM's are supported !!
If you have only 64bit ones, the sdk does not work. It will also not give reasonable error message.
If you cannot install or uninstall sdk, you need to remove(or rename) keys from registry. Search for "nokia". Then you can reinstall.
Windows remove does not work on broken or partial install, so you will need to tweak registry and reinstall, before
you can uninstall the sdk.