Help with installing version 3.0.1

I’m having trouble installing the update version 3.0.1. The install seems to download fine and I’m able to go through several screens to begin the installation. However, at some point the following error pops ups:

There has been an error.
Error trying to install file: destination ${installdir} resolved to an empty value
The application will exit now.

OK, I finally resolved my issue via another route. I downloaded the full version from the website and just installed it over my existing version. It seems to work.