Minecraft Forge error You need to run the version 1.7.2 manually at least once?

I'm installing Minecraft Forge for the first time (after a terrible harsh Mineceraft experience just earlier involving MCPatcher, during which I had uninstalled and re-installed both Minecraft and Java; both seem to be working perfectly). Now whenever I open Forge (which was a pain for me to download, a friend had to send me the direct download file since I could not download it from any site), it opens correctly except whenever I click on "Install Client" and "Okay", it gives me the error message above- "You need to run the version 1.7.2 manually at least once". I have indeed opened my Minecraft, played, saved a quick game, and continued to try. I still get this error. I see many people report this error on numerous forums, but no one gives a straight answer. I'm so frustrated.

I do not want to hear "follow these steps to install Forge"or "follow this video to install Forge" because either way the error message still comes up, and this is what I'm looking to fix.

IN SHORT (IF YOU DON'T WANT TO READ All ABOVE):
Whenever I go to install Minecraft Forge- I click on "Install Client" and "Okay", it gives me the error message above- "You need to run the version 1.7.2 manually at least once". I have run Minecraft as it said, restarted my computer, etc. How to I fix this?

Please.

Added (1). --

Thank you for responding. How can I 'patch' Minecraft to do this? Sorry.

Run Minecraft > Patch it to 1.7."TWO" not 3 not 4 > Start Game > Close MC > Install it

Le seule moyen que j'ai trouve c'est instale forge pour 1.7.10

You have to open your minecraft in the version 1.7.2 then you close and try to install forge, thanks.

I also have this but I read everything and I see everything is nothing happens with this mistake the same way ;-;