Hello, im trying to launch a hacked tekkit launcher, and it worked on win7, but it's not working on vista.
I've reinstalled java and it changed nothing. The error box says:


MissingFieldException[ The following required field is missing from the launch file: <jnlp>]
at com.sun.javaws.jnl.XMLFormat.parse(Unknown Source)
at com.sun.javaws.jnl.LaunchDescFactory.buildDescript or(Unknown Source)
at com.sun.javaws.jnl.LaunchDescFactory.buildDescript or(Unknown Source)
at com.sun.javaws.jnl.LaunchDescFactory.buildDescript or(Unknown Source)
at com.sun.javaws.Main.launchApp(Unknown Source)
at com.sun.javaws.Main.continueInSecureThread(Unknown Source)
at com.sun.javaws.Main$1.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)




any solution for this?