Hello! This will be corrected in DCU 4.9 which correctly has a release date of May 9th at the moment. 

It seems like every version of DCU-cli comes with its own set of problems. For such a small tool it is just impressive that quality control can be so bad.

Whats wrong now? Well it seems that someone thought it would be a good idea to add a check to see if an older version of dcu-cli was already installed like, say, version 4.8 and simply bomb out if it is.

and before I forget, what gives with the continual swapping back and forth between 64bit and 32bit versions. It seems like every second version installs into \program files (x86), only to be then replaced with a 64 bit version. flip-flop-flip-flop ..... zero QA involvement

I feel your pain Ian, but I do blieve 4.9 resolved my issues.  We stayed on 4.5 and I'm now rolling out 4.9.  As for the x86 or x64 folder location, that is funny you mention.  I wrote a script to find the program before it attempts to run it!  LOL