Ok, so this is the message I have received of the bug I told you ;
"Cannot execute "C:\Users\pc\AppData\Local\Temp\Rar$EXa6272.29148\messfeeler1_12_trial\messfeeler.exe"
I will try to update graphics drivers and suspend my anti-virus software.
(And I will give you an update on how it goes, And if my English is bad I am terribly sorry it isn't my first language. And this might not be useful but my laptop/computer is windows 10)