When you launch DragonSetup.exe it immediately pops up an UAC prompt.
If one is only installing in ‘portable’ mode outside of the ‘Program Files’ and other system folders it shouldn’t trigger an UAC prompt.
For example, the Opera installer doesn’t do this when you select the portable install in ‘Options’.
P.S. I also noticed that there’s a log file saved into C:\Users… folder, which is also not desired for portable applications.