can't find 5.4.2 v 730

[phill]

I am running 2 versions of TradeSim 4.22 and 5.40 build 728. I have just downloaded and installed the latest version 5.42 build 730. However I cannot find the latest version to open it. The older 2 version are ok. Any suggestions thanks Phill

[phill]

re system upgrade something else is now happenning. When I try to open iether v5.40 or the new shortcut created when I installed v 5.4.2 I get a message saying TradeSim is unregistered , would I like to register it?
I then enter the rego numbers I got when I upgraded from 4.22 to 5.4.
It accepts the keys and then says impossible to write and save my licence in the system, try admin mode. I click OK and it says activation has been successful, licence change will take place when application is restarted. I click OK then try to open TradeSim. It again says TradeSim is unregistered. I have gone through the registration 3 times no good. Any suggestions. Thanks Phill