Thank you for the answer.
I have tried the link you gave me but it was a failure.
The error code I have seen is: U44M2P7.
Does it mean something for you?
In following your last pieces of advice, I have succeed in downloading LR 6.3 this morning.
I can't explain more in english, sorry, but it works, it's the most important, isn't it?
Thank you again for your help.
Thank you for the update.
Please feel free to contact us for any further assistance.
Enjoy using your Adobe Products!