Try un-installing Java completely and then install the version that comes with the 13 installation.
You might find the latest version of Java in not compatible with the 13 installer.
The same might apply for Quicktime but I think it is just a Java issue.
Barry.
One of the forum moderators.
Versions 6.5 to 25
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Dell Precision 3510 - i7 6820HQ @ 2.70GHz, 16GB RAM, AMD FirePro W5130M, Windows 10