FM Unable to load

Hi, so yesterday FM17 loaded without a problem, but this morning I just get an error that says

"Unable to Initilaise SteamAPI"

This doesn't happen with the pre-game editor as I ran it to check

Does anyone have any idea what the problem might be?

Had a quick Google, someone fixed this by reinstalling Steam.

A bit of a nightmare, but it worked for them so it might work for you?

Found a fix. Loaded in offline mode, then tried again in online mode. Seems to have to done the job