ESR & ID not opening in PI 7.31

Hi,

I have installed Java 1.6(1.6.0_37) and 1.7(1.7.0_40) in same system. ESR builder & ID for PI 7.1 is opening but for 7.31 its not working.

It says Unable to Launch the Application with the below details:

InvalidArgumentException[ Invalid arguments supplied: { }]

  at com.sun.javaws.Main.continueInSecureThread(Unknown Source)

  at com.sun.javaws.Main.access$000(Unknown Source)

  at com.sun.javaws.Main$1.run(Unknown Source)

  at java.lang.Thread.run(Unknown Source)

Suggestions plz?

Regards,

Satya