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Windows [FIXED] XP- Game Maker Studio won't read my licences.

It was working fine until today. I closed out of GM:S to restart my laptop, and when I did, it made me validate my license again. So I did, and it said my license was updated.

The moment I close that box another appears with this message:
"Unable to obtain a valid license. Please check your license key and retry."

I've tried with both entering my license key and logging into my Yoyo Account. It's not working either way.

I've uninstalled GM:S.

I've deleted all the registry info.

It still isn't letting me get into Game Maker.

Someone please help.