Java version: 7u10 build 18

Last version it worked in:6u37

OS: Windows 7 Sp1

Browser: Firefox 17.0.1

Hardware:32bit 

Applet Name and link: Testvm @ http://www.java.com/en/download/testjava.jsp

Bug description: Upon completion of Java 7u10 installation, you get a message "A plugin is needed to display this content. Install Plugin"

Steps to reproduce:

Use a system with no previously installed Jav

1. Install Java 7u10 from Java.com

2. Got to http://www.java.com/en/download/testjava.jsp to verify installation

3. A message displays "A plugin is needed to display this content. Install Plugin"

4. Proceed to install the plugin by clicking on "Install Plugin"

5. A message displays during install "The following plugins are available: Java Runtime Environment 1.7 u9"

6. Upon completion the yet another message displays: "No plugins were installed, Java Runtime Environment 1.7 u9 - Failed" 

7. And then it loops back to the initial installation again

Reproduced by Java.com team: Yes

Error message/Java console output:No Error message nor console output given