When the SAS UDL is selected to load SAS files into Tiberius, SAS* will start and begin to scan its permanent directories to build up a list of files available. This can be a slow process.
 
Alternatively, there is a SAS Files list than can be pre-populated. This list is accessed as shown in the image above.
 
*Note: it is essential that SAS is not already running. Once the data is loaded into Tiberius though, SAS can be terminated, re-opened and used as normal.