Unable to open form 15ca java utility

Dear Members,

I am unable to open Form 15CA filing JAVA utility. It gives error message "Plese select a valid XML / Draft file"

My JAVA version is 8 update 65 and JRE is 1.8.65 which is upto date.

Also I have downloaded the Form 15CA utility form Income Tax web site today.

I am using Windows 8.1 .

I tried to open on three different PC but cannot open.

Please help.

Thank you.