EDIT:
Also, I can't help but notice your directory:
User/GTA San Andreas
as opposed to the normal C/Program Files/Rockstar Games/GTA San Andreas
Not sure if this has anything to do with it, but it might be worth taking into consideration.
Is this a fresh install? Have you tried uninstalling SA:MP + Reinstalling, or are you just deleting the contents and reinstalling?
In any case, see if this helps:
This is the exe (it doesn't come in a .zip or anything), so save it directly to your GTA SA directory.
samp
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