Anonymous Access over HTTPS

I am fairly new to both java key stores and Nexus. I have built and tested Nexus repo over HTTP and it works fine.
I then enabled HTTPS, testing was going well. I can log on, connect to LDAP. However, when I disable HTTP and change my settings.xml to connect over HTTPS I get several errors.

My server has the correct certificate and this has been added into the SSL\keystore.jks
The server cert has an intermediate and ROOT CA (signed internally) which have also both been added to the keystore.jks

Certificate Chain
Root CA
- sub-org CA
- Server cert

Settings.XML

<settings>
  <mirrors>
    <mirror>
		<!--This sends everything else to /public -->
		<id>nexus</id>
		<mirrorOf>*</mirrorOf>
		<url>https://SERVERNAME:8443/repository/maven/</url>
    </mirror>
  </mirrors>
	<profiles>
    <profile>
    <id>nexus</id>
    <repositories>
        <repository>
        <id>central</id>
        <url>http://central</url>
        <releases><enabled>true</enabled></releases>
        <snapshots><enabled>true</enabled></snapshots>
        </repository>
    </repositories>
    <pluginRepositories>
        <pluginRepository>
        <id>central</id>
        <url>http://central</url>
        <releases><enabled>true</enabled></releases>
        <snapshots><enabled>true</enabled></snapshots>
        </pluginRepository>
    </pluginRepositories>
    </profile>
  </profiles>
  <activeProfiles>
    <activeProfile>nexus</activeProfile>
  </activeProfiles>
</settings>

Error

[ERROR] [ERROR] Some problems were encountered while processing the POMs:
[ERROR] Unresolveable build extension: Plugin org.apache.felix:maven-bundle-plugin:3.2.0 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.felix:maven-bundle-plugin:jar:3.2.0 @
[ERROR] Unknown packaging: bundle @ line 9, column 13
[ERROR] Non-resolvable import POM: Could not transfer artifact org.jboss.fuse.bom:jboss-fuse-parent:pom:6.3.0.redhat-187 from/to nexus (https://SERVERNAME:8443/repository/maven/): sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target @ line 28, column 16
[ERROR] 'dependencies.dependency.version' for org.apache.camel:camel-core:jar is missing. @ line 38, column 15
[ERROR] 'dependencies.dependency.version' for org.apache.camel:camel-blueprint:jar is missing. @ line 42, column 15
[ERROR] 'dependencies.dependency.version' for org.slf4j:slf4j-api:jar is missing. @ line 46, column 15
[ERROR] 'dependencies.dependency.version' for org.slf4j:slf4j-log4j12:jar is missing. @ line 50, column 15
[ERROR] 'dependencies.dependency.version' for log4j:log4j:jar is missing. @ line 54, column 15
[ERROR] 'dependencies.dependency.version' for org.apache.camel:camel-sql:jar is missing. @ line 58, column 15
[ERROR] 'dependencies.dependency.version' for org.apache.camel:camel-test-blueprint:jar is missing. @ line 62, column 15
 @
[ERROR] The build could not read 1 project -> [Help 1]
[ERROR]
[ERROR]   The project example.com:hcm-file-split:1.0.0-SNAPSHOT (c:\workspace\NexusTest\pom.xml) has 10 errors
[ERROR]     Unresolveable build extension: Plugin org.apache.felix:maven-bundle-plugin:3.2.0 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.felix:maven-bundle-plugin:jar:3.2.0: Could not transfer artifact org.apache.felix:maven-bundle-plugin:pom:3.2.0 from/to nexus (https://SERVERNAME:8443/repository/maven/): sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target -> [Help 2]
[ERROR]     Unknown packaging: bundle @ line 9, column 13
[ERROR]     Non-resolvable import POM: Could not transfer artifact org.jboss.fuse.bom:jboss-fuse-parent:pom:6.3.0.redhat-187 from/to nexus (https://SERVERNAME:8443/repository/maven/): sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target @ line 28, column 16 -> [Help 3]
[ERROR]     'dependencies.dependency.version' for org.apache.camel:camel-core:jar is missing. @ line 38, column 15
[ERROR]     'dependencies.dependency.version' for org.apache.camel:camel-blueprint:jar is missing. @ line 42, column 15
[ERROR]     'dependencies.dependency.version' for org.slf4j:slf4j-api:jar is missing. @ line 46, column 15
[ERROR]     'dependencies.dependency.version' for org.slf4j:slf4j-log4j12:jar is missing. @ line 50, column 15
[ERROR]     'dependencies.dependency.version' for log4j:log4j:jar is missing. @ line 54, column 15
[ERROR]     'dependencies.dependency.version' for org.apache.camel:camel-sql:jar is missing. @ line 58, column 15
[ERROR]     'dependencies.dependency.version' for org.apache.camel:camel-test-blueprint:jar is missing. @ line 62, column 15
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/ProjectBuildingException
[ERROR] [Help 2] http://cwiki.apache.org/confluence/display/MAVEN/PluginManagerException
[ERROR] [Help 3] http://cwiki.apache.org/confluence/display/MAVEN/UnresolvableModelException

c:\workspace\NexusTest\pom.xml>mvn install
[INFO] Scanning for projects...
Downloading from nexus: https://SERVERNAME:8443/repository/maven/org/apache/felix/maven-bundle-plugin/3.2.0/maven-bundle-plugin-3.2.0.pom
Downloading from nexus: https://SERVERNAME:8443/repository/maven/org/jboss/fuse/bom/jboss-fuse-parent/6.3.0.redhat-187/jboss-fuse-parent-6.3.0.redhat-187.pom
[ERROR] [ERROR] Some problems were encountered while processing the POMs:
[ERROR] Unresolveable build extension: Plugin org.apache.felix:maven-bundle-plugin:3.2.0 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.felix:maven-bundle-plugin:jar:3.2.0 @
[ERROR] Unknown packaging: bundle @ line 9, column 13
[ERROR] Non-resolvable import POM: Could not transfer artifact org.jboss.fuse.bom:jboss-fuse-parent:pom:6.3.0.redhat-187 from/to nexus (https://SERVERNAME:8443/repository/maven/): sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target @ line 28, column 16
[ERROR] 'dependencies.dependency.version' for org.apache.camel:camel-core:jar is missing. @ line 38, column 15
[ERROR] 'dependencies.dependency.version' for org.apache.camel:camel-blueprint:jar is missing. @ line 42, column 15
[ERROR] 'dependencies.dependency.version' for org.slf4j:slf4j-api:jar is missing. @ line 46, column 15
[ERROR] 'dependencies.dependency.version' for org.slf4j:slf4j-log4j12:jar is missing. @ line 50, column 15
[ERROR] 'dependencies.dependency.version' for log4j:log4j:jar is missing. @ line 54, column 15
[ERROR] 'dependencies.dependency.version' for org.apache.camel:camel-sql:jar is missing. @ line 58, column 15
[ERROR] 'dependencies.dependency.version' for org.apache.camel:camel-test-blueprint:jar is missing. @ line 62, column 15
 @
[ERROR] The build could not read 1 project -> [Help 1]
[ERROR]
[ERROR]   The project example.com:hcm-file-split:1.0.0-SNAPSHOT (c:\workspace\NexusTest\pom.xml) has 10 errors
[ERROR]     Unresolveable build extension: Plugin org.apache.felix:maven-bundle-plugin:3.2.0 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.felix:maven-bundle-plugin:jar:3.2.0: Could not transfer artifact org.apache.felix:maven-bundle-plugin:pom:3.2.0 from/to nexus (https://SERVERNAME:8443/repository/maven/): sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target -> [Help 2]
[ERROR]     Unknown packaging: bundle @ line 9, column 13
[ERROR]     Non-resolvable import POM: Could not transfer artifact org.jboss.fuse.bom:jboss-fuse-parent:pom:6.3.0.redhat-187 from/to nexus (https://SERVERNAME:8443/repository/maven/): sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target @ line 28, column 16 -> [Help 3]
[ERROR]     'dependencies.dependency.version' for org.apache.camel:camel-core:jar is missing. @ line 38, column 15
[ERROR]     'dependencies.dependency.version' for org.apache.camel:camel-blueprint:jar is missing. @ line 42, column 15
[ERROR]     'dependencies.dependency.version' for org.slf4j:slf4j-api:jar is missing. @ line 46, column 15
[ERROR]     'dependencies.dependency.version' for org.slf4j:slf4j-log4j12:jar is missing. @ line 50, column 15
[ERROR]     'dependencies.dependency.version' for log4j:log4j:jar is missing. @ line 54, column 15
[ERROR]     'dependencies.dependency.version' for org.apache.camel:camel-sql:jar is missing. @ line 58, column 15
[ERROR]     'dependencies.dependency.version' for org.apache.camel:camel-test-blueprint:jar is missing. @ line 62, column 15
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/ProjectBuildingException
[ERROR] [Help 2] http://cwiki.apache.org/confluence/display/MAVEN/PluginManagerException
[ERROR] [Help 3] http://cwiki.apache.org/confluence/display/MAVEN/UnresolvableModelException

See here: