After installing UDE I cannot create a new workspace, the error message is 'Failed to initialize workspace !'.

For diagnostic of the problem run the tool

  UDEAdmin.exe

from the UDE folder. When more than 10 components are shown as not registered for usage with UDE, then the basic reason could be an unregistered atl.dll, which prevents the correct installing of UDE. To solve the problem, please open a command shell within C:\Windows\system32 directory. On command line run:

  regsvr32 atl.dll

Then run

  register.exe

within your UDE installation folder and all components should be registered successfully.