Even after completely deleting the entire steam folder with the Windows 8 Programs and Features control panel, wiping the remains with manual deletion and Killbox, and reinstalling Steam, Skyrim, BOSS, TESVEdit, and NMM from scratch, very carefully following all instructions and disabling automatic STEAM updates and beta sign-ups and all the usual s***, I still get this when I tried to install SkyUI. I installed SKSE using the automatic installer on the SKSE silverlock website. I also modified Skyrim with this; 1)Download SKSE 2)Put the DLLs and EXE files in the Skyrim folder 3)Put the PEX files from Data\Scripts in Skyrim\Data\Scripts REMEMBER: If you don't have a Scripts folder, create one. Make a backup before renaming the TESV exe .. 4)In the Skyrim folder rename "TESV" to "Skyrim" 5)Rename "skse_loader" to "TESV" 6)In the data folder make a new folder called "SKSE" 7)Copy the text in the description into notepad 8)Save it in Data\SKSE as "skse.ini" as type "All Files" 9)You can now use Steam or your normal desktop icon to run SKSE I'm fairly certain that if I do a total hard wipe and reboot of the potential problem areas, the fact that this keeps popping up means that there is a problem on skse's end. For the record, here's me comp specs; Windows 8 Toshiba Satellite L850 Intel ® Core i5-3210M CPU @ 2.50 Ghz 6 GB RAM (5.98 Usable) 64-bit OS