Anyone else having issues building lately?  My build was failing with an invalid class file format in
one of the JPA tests, so I did an "ant clean" and "ant" at
the root and got:
 
 
C:\Engineering\EclipseLink\dev>ant
Buildfile: build.xml
 
build-core:
     [echo]
jpaproto.build.location =
'C:\Engineering\EclipseLink\dev\jpa\plugins\javax.persistence'
 
clean:
   [delete] Deleting
directory C:\Engineering\EclipseLink\dev\jpa\plugins\javax.persistence\classes
   [delete] Deleting:
C:\Engineering\EclipseLink\dev\jpa\plugins\javax.persistence_1.99.0.jar
 
compile:
    [mkdir]
Created dir: C:\Engineering\EclipseLink\dev\jpa\plugins\javax.persistence\classes
    [javac]
Compiling 97 source files to
C:\Engineering\EclipseLink\dev\jpa\plugins\javax.persistence\classes
 
package:
     
[jar] Building jar:
C:\Engineering\EclipseLink\dev\jpa\plugins\javax.persistence_1.99.0.jar
 
BUILD FAILED
C:\Engineering\EclipseLink\dev\build.xml:156: The following error
occurred while executing this line:
C:\Engineering\EclipseLink\dev\jpa\plugins\javax.persistence\build.xml:97:
java.lang.RuntimeException: data starting at 0 is in unknown format
 
Total time: 2 seconds
C:\Engineering\EclipseLink\dev>
 
 
Any ideas?