Since yesterday, I restart my computer. Use WD10, try again Designer Pro9... and Designer Pro 9 launch without any message.
I don't know why, but problem seem's to be solved.
Maybe I should'nt have launched Designer Pro 9 just after updating WD10 ?
I shouldn't have panicked, but I was in a hurry.
Everything works fine now.
Sorry for the useless tread (maybe admin can suppress it)
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