preverify error when netbean 4.0 build classes tha

Java on Mobile Devices J2ME
#1

ERROR: native methods should not appear
Error preverifying class com.sprintpcs.media.Clip

#2

There was a thread about such problem at nbusers@netbeans.org. Hopefully it will help you:
http://www.netbeans.org/servlets/ReadMsg?list=nbusers&msgNo=48660