Bug in Garry`s Mod !!! Please, help me!!

I cant download addons to Garrys Mod in the game!
Yesterday I was downloading update of Garrys Mod. Suddenly my electricity turned off! When I turned on Garrys Mod, all what I have saved was gone, and I cant download new addons. I dont even see a screenshot of addon! Help me please! I rebuted my computer and reinstalling Garry`s Mod and I have this problem yet! What should I do?


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