I bought Xara Photo & Graphic Designer 10 and still have XDPXv10 installed but neither would run.

I asked xara what to do. Little of use came back.

Now, by chance, I have the trick.

Ensure all other Xara Desktop applications (XDA) are now running and Run as Administrator either of these first before launching later versions.
I believe any XDA v11 on do not have this niggle.

Acorn

P.S. I hold onto these as they are perpetual licences and I might be able to offer further TG advice. Mad I know.