My source sdk wont launch

so I reinstalled my source sdk and now it wont launch. it shows the launching source sdk screen, then it shows the green outline around my avatar, meaning im playing a game. Then a few seconds later it shows the blue outline meaning im not playing a game.
Is there anyway to fix this?
Please respond!

Post this in the Mapping Help Megathread next time. Try deleting the /bin folder in your sourcesdk folder under your account name.

Feel free to make your own thread to ask questions, there’s no rule against it.

Verify your game cache (in steam right click on the sdk -> properties -> local files verify game cache integrity)

And if those don’t work, try deleting your clientregistry.blob inside of your steam\ folder and restart steam.

thank you so much! You to metallics!

No problem.