If you're seeing something like this in the logs:
####<Jul 6, 2001 7:18:52 PM EDT> <Error> <Management> <spinner> <myserver>
<Application Manager
Thread> <> <> <141004> <IOException opening application
mydomain:Name=war-eadirect,Type=Application, loading from path
./config/mydomain/applications/war-eadirect.ear>
java.util.zip.ZipException: error in opening zip file
at java.util.zip.ZipFile.open(Native Method)
at java.util.zip.ZipFile.<init>(ZipFile.java:110)
at java.util.jar.JarFile.<init>(JarFile.java:115)
...
there's an open bug report about it, CR037512. The fix is in progress, no ETA, but it'll appear in a future Service Pack.