Unable to install Oanda MT4

 
I just opened an account at Oanda and tried to install their version of MT4. The installation window opens normally but remains locked on the second step: "downloading the files" (see attached file). My computer runs with Windows XP SP3 and I previously installed, run, and uninstalled properly MT4 standard version from MetaQuotes. When contacted, the Oanda customer support says that this may be a MetaQuote topic and that they are unable to help me. Does anybody can help me? Thank you very much.
 
nothing attached
 

Now it should be visible:

 

There is no more problem. I uninstalled all the MTx I had on my computer, then I installed MT4 standard version, and just after Oanda MT4. The installation has been successfully completed

Bye

Reason: