Internal TSKH error,session terminated

Hi ,

     I am getting error while opening TCode - "/IWFND/MAINT_SERVICE" in Gateway system version SAP NetWeaver 7.40.

     Error : Internal TSKH error,session terminated

     Earlier this tcode was working fine but when i formated my laptop then only this specific tcode is giving error.

     I am using SAP GUI 7300.3.9.1084 Patch Level 9.

     My laptop has 64 bit OS .

     this error is coming on my laptop only on other system with user id it works fine.

     Kindly suggest, what could be possible problem with system.

     Thanks in advance

     Regards

     Vivek