[jcifs] Major minor version error in JCIFS1.2.8

[gruizf at credomatic.com]

Hello.

I am using JCIFS1.2.7. It's important for me to eliminate the Deadlock
issue, so I switched to 1.2.8.

I am getting this error:
[Error de servlet]-[Filter [NtlmHttpFilter]: could not be loaded]:
java.lang.LinkageError: LinkageError while defining class:
jcifs.http.NtlmHttpFilter
Could not be defined due to: jcifs/http/NtlmHttpFilter (Unsupported
major.minor version 49.0)

I'm using WAS5.1.2. I already switched Java compiler from 1.3 to 1.4 but
still get the same error.

What else could I do?

Thanks!