Ive been offline for a 4-5 months and now my spiral knights items are no longer in my steam inventory. If anyone can explain why did this happen or how can i fix it post a comment on this thread or comment on my steam profil or even add me here http://steamcommunity.com/id/Pro-Ro-Player/ , thanks in advance guys/girls :) . Have a great day !
Sprial Knights is having compatibility issues with steam atm. They are aware of the problem and are fixing it. But it wont be soon. Probably thats why you dont see your items in steam.