Sambo1434

I downloaded the free version for Mac from the website which noted that Philips supported sound files would only work with the purchase of the Pro version. So, I purchased the Pro version, went through the process of registering my serial number and getting the registration code, entered that into my software as requested but still get notification that .dss files are not supported. Anyone else have this issue? Have I missed a step? My "About" says I have the Pro version (6.05) but don't seem to have access to the features I paid for (i.e. .dss file use). Help