Hi! I tried to do all the fix/run as admin/reinstall possible and didn't work. After 2 days of headach i finnaly found how to get it work. Just came here to share! -Take the Skyrim folder (all of it) out of the Steam directory and creat a C://game/ and put it there. -Star the game using SKSE (Run as administrator), now steam will pop up and tell you that files are missing. -Right Click on Skyrim in Steam, select properties and in the Local Files tab, select browse local files select the SKSE again in the new Skyrim directory. I did that and it worked. No more error 1! I think it's best to put Skyrim in it's own directory to avoid conflict when using mods and all. Hopes it help!
