I'd like to compile my reports with earlier versions of the JasperReports, so I'm trying to add other versions of the JasperReports to my Jaspersoft Studio on: Project -> Properties -> Jaspersoft Studio -> Compatibility -> Use Project Settings -> Manage JasperReports Version.
I choose the Add From URL option and then I select some version on combobox. After a few moments I get the error below:
I tried to install many versions but all of them failed.
I'm opening the Jaspersoft Studio with admin privilegies on Windows and my environment is as follows:
- Windows 7
- Java 8
- Jaspersoft Studio 6.3.0
Note: I've already tried with Jaspersoft Studio 6.3.1 too.
I'd like to know if this is a problem of my environment. Anyone have any tips?

