There are certain design options that need to be turned on in order to get the best from the developer's workbench. These turn on extended features that allow custom formatting of cells, extended styling options such as rounded corners on objects, and debugging problems after deploying your document to a server. When a QVW fails on a server, the log file can be quite unhelpful, but one simple setting before deployment will help you find problems quickly.
Select User Preferences from the Settings menu and then click on the Design tab. There are three options here that should be set in order to use the workbench more effectively.