Hi I am a new member as of today also I am almost a newbie to FSUIPC4 which I purchased yesterday, and because I used FSUIPC3 back in 2012/13 I was given a FSUIPC4 update/discount version at a savings very nice thank you but I have been trying since yesterday to activate the software with the details sent to by simmarket and all I keep getting is the message this is not a valid FSUIPC4 key I have been in constant contact with simmarket about this problem only to be told that I must be doing something wrong this maybe the case but if I am using copy & paste on the details supplied by simmarket I fail to see what the problem is any and all help will most gratefully excepted many thanks Vic :???: