[castor-user] Help: unable to find FieldDescriptor....

[h z]

Hi all
After building java class succesfully, I always got the following error when I run a test program.

"unable to find FieldDescriptor for 'VarAsciiFrame' in ClassDescriptor of Instrument{file: [not available]; line: 8; column: 62}
        at org.exolab.castor.xml.Unmarshal

ler.unmarshal(Unmarshaller.java:671)
        at org.exolab.castor.xml.Unmarshaller.unmarshal(Unmarshaller.java:565)
        at org.exolab.castor.xml.Unmarshaller.unmarshal(Unmarshaller.java:748)
         .............................
"
I checked the generated classes, both VarAsciiFrame.class and VarAsciiFrameDescriptor.class are generated.

BTW, for those generated descriptor class files, why so many XXXXDescriptor$1.class XXXXDescriptor$2.class were also created?

Any suggestion will be appriciated