Windows 8.1 error

[cestyany]

Got this error when trying to run DragonNetworkIL.exe :

sevenzip: error result (00000001) "incorrect function"

After I click ok after this error the launcher pops up but full check button is not available and cant start the game nor fix.

Plz help me out

[Danilo]

Have you used Admin mode?

[cestyany]

I tried Admin mode, windows xp compatiblity and redownload client and still got this problem.

[kainmercy]

try to download winrar, next run allways with administrator in the .exe properties