Steam does not work

So I just got vikki 2 yesterday and I played it for roughly 12 hours. I turned off my computer and when i woke up today when I went to the game shortcut or the Steam shortcut it says.

ERROR!

Steam.exe (main exception): CMultiFieldBlob(pSerialized): Bad field- extends past end of blob.

So I tried going onto steam through the internet and after more than 2+ minutes it says

Steam has stopped due to a long running script.

So in a rush I went to vikki 2. I clicked Play Game... and it lags out. If anyone has any advice please tell me.

Edit- Then after message from Adope Flash Player comes up and says....

SecurityError: Error #2060: Security sandbox violation: ExternalInterface caller http://josefvstalin.com/js/swfupload/Flash/swfupload.swf cannot access <unknown>.
at flash.external::ExternalInterface$/_evalJS()
at flash.external::ExternalInterface$/call()
at ExternalCall$/Bool()
at SWFUpload/CheckExternalInterface()
at MethodInfo-10()
at flash.utils::Timer/_timerDispatch()
at flash.utils::Timer/tick()

Why JVS is on there i do not know...

Try reinstalling steam.

Yeah I tried that but now I have to re-install all muh games. Meh oh well atleast it works now.

Did you not realize you could have done it without uninstalling your games?

Well I only play 2 games on steam and to install both took 30 minutes.