[jboss-user] [Installation, Configuration & DEPLOYMENT] - Re: problems upgrading from 4.03 to 4.2.2GA

[PeterJ]

You have to be very careful using tools like 7-zip to manipulate jar/war/ear files. Many of these tools use compression algorithms that are incompatible with those used by the jvm. A good test to see if such a tool works correctly is to use the jar utility to attempt to extract the jar/war/ear file contents afterwards.

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