Hi David,
This is a bug in the deeplink module we found only recently ourselves. A new version should be on the AppStore soon.
For now, you could fix the java action with the following change.
Change line 275 in StartDeepLink.java in your javasource/deeplink/actions from:
args.put("url", request.getResourcePath();
Into:
args.put("url", request.getResourcePath().substring(1));
A new version has been released (1.3), in which the issue should have been solved.
Further changes are: