Installation of Prime 3 fails with error: "PTC Installation Assistant has encountered a problem and needs to close. We are sorry for the inconvenience"

Hello,

Maybe someone here has encountered this problem during installation of Mathcad Prime 3.0, or knows something about it:

1. The installation media is downloaded from Software Download on the PTC website, and unzipped successfully.

2. Setup is run and installation starts as usual.

3. Installation step 1: Add new software - Next.

4. Installation step 2: License Agreement check yes - Next.

5. ERROR when clicking Next on the License Agreement, see picture below.

"PTC Installation Assistant has encountered a problem and needs to close. We are soory for the inconvenience. If you were in the middle of something, the information you were working on might be lost. Please tell Microsoft about this problem. We have created an error report that you can send to us. We will treat this report as confidental and anonymous."

I've tried downloading the media several times to ensure it's all there but the error message appears at the same step every time. Why does this message appear during installation?

PS. I ran the installation using PrimeWixInstaller_32bit.msi instead but the installation folder doesn't look the same..