Proguard 4.4 is mangling all files under META-INF/** as if there were manifect files. For example META-INF/plexus/components.xml. This is not a manifect file but 4.4 treats it as if it was, splitting up long lines, as should be done for manifest.mf and friends, but horribly breaking other files, like xml.
The problem is in proguard/OutputWriter.java:169:
new NameFilter("META-INF/**"...
2009-12-03 15:21:39 UTC in ProGuard Java Optimizer and Obfuscator