OSBot installation wont start

[Dropkick Ftw]

When I click download, it downloads and enters download file. However, when I open the .jar file for it to install, i get the following error message:

 

"Could not find the main class: org.osbot.Booot. Program will exit."

What can I do to fix this?

[Muffins]

Update your java JRE and JDK