hi snowflake , many thanks for the reply
I purchased the music program from the official website
http://www.propellerheads.se/products/reason/I think it cost about 350 euro around 1 year ago .
the USB key comes in the post so everything is legit
the program is downloaded from the site but in order for it to work you need the USB key to prevent piracy , the key is run by codemeter , no USB and the program wont work .
It was working up until I did the latest update to avast ( 5-7 days ago )