Building Open ADK with Maven issues

Any ideas on how to resolve this issue? Thanks. I was able to build adk-generator but not adk-library.

[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO]
[INFO] openadk.library.core .............................. FAILURE [3.885s]
[INFO] openadk.library.us ................................ SKIPPED
[INFO] openadk.library.uk ................................ SKIPPED
[INFO] openadk.library.au ................................ SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 4.056s
[INFO] Finished at: Tue Aug 16 17:30:42 EDT 2011
[INFO] Final Memory: 4M/121M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal on project adk-library-core: Could not resolve de
pendencies for project openadk:adk-library-core:jar:1.0.0-SNAPSHOT: Failed to co
llect dependencies for [openadk:adk-generator:jar:us-sdo-src:1.0.0-SNAPSHOT (pro
vided), commons-lang:commons-lang:jar:2.6 (compile), commons-logging:commons-log
ging:jar:1.1.1 (compile), commons-jxpath:commons-jxpath:jar:1.3 (compile), javax
.xml.bind:jsr173_api:jar:1.0 (compile), log4j:log4j:jar:1.2.16 (compile), xerces
:xercesImpl:jar:2.9.1 (compile), jetty:org.mortbay.jetty:jar:5.1.12 (compile), j
etty:org.mortbay.jmx:jar:5.1.10 (compile), com.sun.xml.stream:sjsxp:jar:1.0.1 (c
ompile), javax.servlet:servlet-api:jar:2.5 (provided)]: Failed to read artifact
descriptor for openadk:adk-generator:jar:us-sdo-src:1.0.0-SNAPSHOT: Could not tr
ansfer artifact openadk:adk-generator:pom:1.0.0-SNAPSHOT from/to sifworks (http:
//10.40.107.88:8081/nexus/content/groups/public): Error transferring file: Conne
ction refused: connect -> [Help 1]