To me it looks as if eventually your maven isn't able to resolve the flexmojos plugin itself.
Here the repository settings I use for a project of mine: <repositories> <!-- This is where we get released stuff from. --> <repository> <id>maven-central</id> <url>http://repo1.maven.org/maven2/</url> <releases> <enabled>true</enabled> </releases> <snapshots> <enabled>false</enabled> </snapshots> </repository> <!-- This is where we get unreleased Apache stuff from --> <repository> <id>apache-snapshots</id> <url>http://repository.apache.org/content/groups/snapshots/</url> <releases> <enabled>false</enabled> </releases> <snapshots> <enabled>true</enabled> </snapshots> </repository> <!-- This is where we get unreleased Flexmojos stuff from. --> <repository> <id>sonatype-snapshots</id> <url>https://oss.sonatype.org/content/repositories/snapshots/</url> <releases> <enabled>false</enabled> </releases> <snapshots> <enabled>true</enabled> </snapshots> </repository> <!-- This is where third party dependencies for flexmojos come from. --> <repository> <id>sonatype-flexmojos-cache</id> <url>https://repository.sonatype.org/content/groups/flexgroup/</url> <releases> <enabled>true</enabled> </releases> <snapshots> <enabled>true</enabled> </snapshots> </repository> </repositories> <pluginRepositories> <!-- This is where we get released stuff from. --> <pluginRepository> <id>maven-central</id> <url>http://repo1.maven.org/maven2/</url> <releases> <enabled>true</enabled> </releases> <snapshots> <enabled>false</enabled> </snapshots> </pluginRepository> <!-- This is where we get unreleased Flexmojos stuff from. --> <pluginRepository> <id>sonatype-snapshots</id> <url>https://oss.sonatype.org/content/repositories/snapshots/</url> <releases> <enabled>false</enabled> </releases> <snapshots> <enabled>true</enabled> </snapshots> </pluginRepository> <!-- This is where third party dependencies for flexmojos come from. --> <pluginRepository> <id>sonatype-flexmojos-cache</id> <url>https://repository.sonatype.org/content/groups/flexgroup/</url> <releases> <enabled>true</enabled> </releases> <snapshots> <enabled>true</enabled> </snapshots> </pluginRepository> </pluginRepositories> But keep in mind that if you use a custom repo manager (setup as mirror for all in your settings.xml) then these settings will not have any effect. Chris ________________________________________ Von: mscharp <michael.sch...@fmr.com> Gesendet: Donnerstag, 16. Juli 2015 23:06 An: dev@flex.apache.org Betreff: Re: AW: AW: AW: Problems Installing Flash SDK according to documentation I've finally had a chance to get outside of my company proxy and try this out. I made better progress, but still failing to build. I did see a couple of things that I thought might be worth mentioning, in addition to the ultimate failure. I noticed that it tried to install items twice. For example, I got the [INFO] - Installing Apache Flex SDK 4.14.1 =========================================================== Downloading http://archive.apache.org/dist/flex/4.14.1/binaries/apache-flex-sdk-4.14.1-bin.zip Expected size: 68MB 100% [=================================================] and then later it tried to download/install it again. Is there a "retry" built in? I did notice that before it went through this (whole) process a second time, I received this warning (which leads to my failure to build): [INFO] - Finished installing Adobe Fontkit libraries [DEBUG] Verifying availability of /Users/me/.m2/repository/com/adobe/fontkit/1.0/fontkit-1.0.pom from [central (https://repo.maven.apache.org/maven2, default, releases), rso (http://repository.sonatype.org/content/groups/flexgroup/, default, releases+snapshots)] [WARNING] The POM for com.adobe:fontkit:jar:1.0 is missing, no dependency information available Also, if the project fails to build, and therefore fails to install the downloaded artifacts into the local repository, subsequent rebuilds will download the sdk zip file again and again. Maybe the mavenizer could check the temp directory for the downloaded zip file and use it instead of downloading the zip again? The ultimate failure was this: [INFO] - Finished installing Adobe Fontkit libraries [DEBUG] Verifying availability of /Users/me/.m2/repository/com/adobe/fontkit/1.0/fontkit-1.0.jar from [central (https://repo.maven.apache.org/maven2, default, releases), rso (http://repository.sonatype.org/content/groups/flexgroup/, default, releases+snapshots)] [DEBUG] Looking up lifecyle mappings for packaging swf from ClassRealm[maven.ext, parent: ClassRealm[plexus.core, parent: null]] [ERROR] [ERROR] Some problems were encountered while processing the POMs: [ERROR] Unresolveable build extension: Plugin net.flexmojos.oss:flexmojos-maven-plugin:7.1.0-SNAPSHOT or one of its dependencies could not be resolved: The following artifacts could not be resolved: org.apache.flex:compiler:pom:4.14.1, com.adobe:fontkit:jar:1.0: Failure to find org.apache.flex:compiler:pom:4.14.1 in https://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced @ [ERROR] Unknown packaging: swf @ line 28, column 16 So, looks like there are still two issues I'm dealing with. The first is the proxy issue. As I mentioned, I do have the proxy settings configured in my settings.xml file that is in my maven/conf directory. It does not currently have a username or password configured, although to test, I did try it with my LAN username/password configured. It didn't work that way either. The second is this new issue. Thanks Chris! -- View this message in context: http://apache-flex-development.2333347.n4.nabble.com/Problems-Installing-Flash-SDK-according-to-documentation-tp48319p48535.html Sent from the Apache Flex Development mailing list archive at Nabble.com.