New SIU 4.30 fixes the Corruption warning bug
Today LGG released a nice fix for SIU where it gets rid of the Corrupted files warning box bug in the launcher.
This bug was uninstalling skins and forcing players to re-install them after the LOL was open. Now it should work correct for everyone.
Let a comment here if you still have problems with custom skins/maps, so we can investigate for you (please let the most info possible, such as name of map, version of map(hd,sd,ld), version of SIU, version of LOL, windows, etc). Also, make sure you first read the Tutorial and FAQ pages.
You can download the latest version of SIU here! (or just use the automatic update inside SIU)
Thanks for using our skins!