What is the difference between the web and base assemblies?
The reason that I ask is that, for example, the XlsIO base and web assemblies both contain a definition for the ExcelEngine class, but the web assembly continued putting an "unregistered" tab in the excel spreadsheet outputted.
For the record, I was doing a manual deploy; there's no documentation that says that you should use the base assembly over the web assembly, and when.