C46 Commando Problems

I just installed Paulo Pizzato's lovely C-46 Commando into FS2004.Unfortunately there seem to be a couple of problems with it that I'm hoping someone will know the cures for.1: On selecting Commando in the Aircraft Menu I get a "SoundLib -File not found " several times.Eventually after clicking OK about 6 times it lets me continue and when in flight etc. all the sounds seem to be there.In the aircraft's sound folder there are 30 files plus the.cfg file.Am I missing any?2: The transponder doesn't work - that is - you can't change the code from the default 1200.This is a problem if flying online.The rest of the radio stack seems fine - it's just the transponder.This is a lovely model,flies well ,so I would like to find fixes for this.MTIADave