Hello, 

we also have this issue since the maven-jar-plugin version was not configured 
and so I found this solution 
and changed the plugin version accordingly in the parent POM. Eclipse effective 
POM shoulds 

<plugin> 
<artifactId>maven-jar-plugin</artifactId> 
<version>2.3.2</version> 

But the issue does not go away, neither by re-importing the Maven project nor 
by restarting Eclipse. 

Any hints to get around this? 

Thanks, Jörg 

----- Original Message -----

> From: "Nathaniel Mishkin" <[email protected]>
> To: "Maven Integration for Eclipse users mailing list"
> <[email protected]>
> Sent: Monday, December 3, 2012 6:04:22 PM
> Subject: Re: [m2e-users]
> "org.codehaus.plexus.archiver.jar.Manifest.merge(org.codehaus.plexus.archiver.jar.Manifest)"

> Fred,

> That seems to have fixed it, thanks!

> Nat

> On Mon, Dec 3, 2012 at 10:48 AM, Fred Bricon < [email protected] >
> wrote:

> > Looks like https://github.com/sonatype/m2eclipse-extras/issues/10 .
> 

> > Try downgrading maven-jar-plugin version to 2.3.2.
> 

> > On Mon, Dec 3, 2012 at 4:44 PM, Rafał Krzewski <
> > [email protected] > wrote:
> 

> > > Nat,
> > 
> 

> > > have you checked the "secret" m2e log in
> > > .metadata/.plugins/org.eclipse.m2e.logback.configuration/0.log?
> > 
> 

> > > Cheers,
> > 
> 
> > > Rafał
> > 
> 

> > > On 11/30/2012 09:34 PM, Nathaniel Mishkin wrote:
> > 
> 

> > > > I have a m2e-imported project that produces this error in the
> > > > Eclipse
> > > > "Problems" view:
> > > 
> > 
> 

> > > > org.codehaus.plexus.archiver.jar.Manifest.merge(org.codehaus.plexus.archiver.jar.Manifest)
> > > 
> > 
> 

> > > > that's all. Nothing else. The Eclipse Error log contains:
> > > 
> > 
> 

> > > > !ENTRY org.eclipse.m2e.logback.appender 4 0 2012-11-30
> > > > 15:29:47.158
> > > 
> > 
> 
> > > > !MESSAGE Skipping resource folder /backend-core-test-service
> > > 
> > 
> 

> > > > "/backend-core-test-service" is the name of the project that
> > > > the
> > > > "Manifest" error is being shown for.
> > > 
> > 
> 

> > > > Does anyone have a clue what these messages are trying to tell
> > > > me?
> > > 
> > 
> 

> > > > Thanks.
> > > 
> > 
> 

> > > > Nat
> > > 
> > 
> 

> > > > _______________________________________________
> > > 
> > 
> 
> > > > m2e-users mailing list [email protected]
> > > > https://dev.eclipse.org/mailman/listinfo/m2e-users
> > > 
> > 
> 

> > > _______________________________________________
> > 
> 
> > > m2e-users mailing list
> > 
> 
> > > [email protected]
> > 
> 
> > > https://dev.eclipse.org/mailman/listinfo/m2e-users
> > 
> 

> > --
> 
> > "Have you tried turning it off and on again" - The IT Crowd
> 

> > _______________________________________________
> 
> > m2e-users mailing list
> 
> > [email protected]
> 
> > https://dev.eclipse.org/mailman/listinfo/m2e-users
> 

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