Hello, I recently had to format my computer to reinstall Windows, as it was going all wonky on me. Little did I know that the setup would go wonky too. >.< Text-mode goes by fine, but at the beginning of the GUI-mode setup, I get the infamous "Internal setup data structures are corrupted" error. After much searching, I've found that this error mostly occurs as a result of a malformed winnt.sif file. However, I wasn't even running one originally. I even tried adding one later using nLite on my old computer, to no avail. Here's the setup, if it makes a difference: I have two hard drives. The primary hard drive has an NTFS partition for Windows, and ext3 and Linux Swap partitions for Kubuntu. The secondary has a FAT32 and an NTFS. I can still use Linux to download software and/or burn a new disc, and I can use my old computer or a USB BartPE if I need to run a Windows app. I'm using an install disc slipstreamed with SP3. Can someone help me out with this? If you need more info (setup log, etc.) let me know. I'm posting from work, so I don't have that right now. XD Kewlio