verify digital signature mobile 5.0

i have a jad file d2link and i get this error msg [unable to verify digital signature ] can any one help its on a 8525 phone with wm5 on it with the java program 6.1 i have downloaded opera it seem to work fine plus the golf tracker and gmail and them seem to work fine or is there any way to bypass this or add something to make it work

Message was edited by:

ddrake2196@aol.com

[399 byte] By [ddrake2196@aol.coma] at [2007-11-27 7:28:14]