Icons disappeared after upgrade 2.5 -> 3.1

[tmoes]

hello,

after upgrade to version 3.1 (2012.10.10) many icons are no longer displayed.

       ColumnTree columnTree = new ColumnTree();  
        columnTree.setWidth100();  
        columnTree.setHeight(205);  
        columnTree.setDataSource(EmployeeXmlDS.getInstance());  
        columnTree.setAutoFetchData(true);  
        columnTree.setClosedIconSuffix("");  
        columnTree.setShowHeaders(true);  
        columnTree.setShowNodeCount(true);          
        columnTree.setLoadDataOnDemand(false);  
        columnTree.draw();

untitled text 5:381: [WARN] 404 - GET /images/icons/16/person.png (127.0.0.1) 1412 bytes
untitled text 5:398: [WARN] 404 - GET /images/icons/16/person.png (127.0.0.1) 1412 bytes
untitled text 5:417: [WARN] 404 - GET /builtinds/sc/skins/Enterprise/images/TreeGrid/folder.gif (127.0.0.1) 1442 bytes
untitled text 5:435: [WARN] 404 - GET /builtinds/sc/skins/Enterprise/images/TreeGrid/folder.gif (127.0.0.1) 1442 bytes
untitled text 5:453: [WARN] 404 - GET /builtinds/sc/skins/Enterprise/images/TreeGrid/folder.gif (127.0.0.1) 1442 bytes
untitled text 5:471: [WARN] 404 - GET /builtinds/sc/skins/Enterprise/images/TreeGrid/file.gif (127.0.0.1) 1440 bytes

what I did:
1) override and update all jar's
2) changed classpath
3) gwt build
4) cleanup browser cache (FF 9)
5) close and restart FF
6) run gwt app

Do I have to do something different this time?

Used:
OS: MacOS 10.8
Browser: FF 9
smartgwt: SNAPSHOT_v8.3d_2012-10-10/PowerEdition Deployment 2012-10-10
gwt: 2.4

best regards,
timo

[tmoes]

there are news about this issue?