I downloaded the source code for Apache Ace on Dec 9 and it built successfully. I was able to run the dev server and attach a client at localhost:8080/ace.
I added an artifact, feature and a distribution. I cannot seem to drag an artifact onto a feature. The drag seems to operate as I would expect and the drop on the feature seems to change color as expected, but the bundle is not added to the feature. I have tried this in both IE8 and FireFox 8. I went to the vaadin samples page https://vaadin.com/demo and the drag-drop demos work fine there, so I don't think it is a browser issue. Also, the progress bar in the bottom left corner is doing a continual grey barber pole effect and never seems to end or change. When I open a Vaadin Debug Window (localhost:8080/ace?debug), it is being continually updated every second with the recurring entry Making UIDL Request with params: afba626d-6e86-436e-ac3f-1a1072658972 Server visit took XXXms JSON parsing took 0ms Processing time was XXms for 59 characters of JSON Referenced paintables: 29 Thanks Wayne Irwin