Getting this same error on a fresh install. Here is my debug
[12/13/2012 05:08:55 PM] Starting up...
[12/13/2012 05:08:55 PM] Starting up...launcher version is 1.65.23
[12/13/2012 05:08:55 PM] App data folder path is C:\ProgramData\SwiftKit
[12/13/2012 05:08:55 PM] Checking folder structure
[12/13/2012 05:08:55 PM] Attempt to set browser emulation
[12/13/2012 05:08:55 PM] Check if drive is NTFS
[12/13/2012 05:08:55 PM] Drive is NTFS so set required permisions
[12/13/2012 05:08:55 PM] Finished setting permissions
[12/13/2012 05:08:55 PM] Starting cleanup
[12/13/2012 05:08:55 PM] Variables set
[12/13/2012 05:08:55 PM] Delete all temp files
[12/13/2012 05:08:55 PM] Delete all temp folders
[12/13/2012 05:08:55 PM] exiting cleanup temp data
[12/13/2012 05:08:55 PM] Finished cleaning up temp data
[12/13/2012 05:08:55 PM] Initialize finished
[12/13/2012 05:08:57 PM] Launch button was pressed
[12/13/2012 05:08:57 PM] Get a setting from somewhere
[12/13/2012 05:08:57 PM] Connecting
[12/13/2012 05:08:57 PM] Update server responded, download update file
[12/13/2012 05:08:57 PM] Got our update file, now decode it
[12/13/2012 05:08:57 PM] Update file decoded, now read it...
[12/13/2012 05:08:57 PM] Check versions
[12/13/2012 05:08:57 PM] Checking file - SwiftKit(Install)[Caution: Executable File]
[12/13/2012 05:08:57 PM] Checking file - SwiftKit[Caution: Executable File]
[12/13/2012 05:08:57 PM] Checking file - ExePatcher[Caution: Executable File]
[12/13/2012 05:08:57 PM] Checking file - LaVolpeAlphaImg.ocx
[12/13/2012 05:08:57 PM] Checking file - SwiftKit-RS[Caution: Executable File]
[12/13/2012 05:08:57 PM] Error Downloading Update: Cannot write file to disk.
Error 35758: Unable to retrieve data
[12/13/2012 05:08:58 PM] Connecting
[12/13/2012 05:08:58 PM] Update server responded, download update file
[12/13/2012 05:08:58 PM] Got our update file, now decode it
[12/13/2012 05:08:58 PM] Update file decoded, now read it...
[12/13/2012 05:08:58 PM] Check versions
[12/13/2012 05:08:58 PM] Checking file - SwiftKit(Install)[Caution: Executable File]
[12/13/2012 05:08:58 PM] Checking file - SwiftKit[Caution: Executable File]
[12/13/2012 05:08:58 PM] Checking file - ExePatcher[Caution: Executable File]
[12/13/2012 05:08:58 PM] Checking file - LaVolpeAlphaImg.ocx
[12/13/2012 05:08:58 PM] Checking file - SwiftKit-RS[Caution: Executable File]
[12/13/2012 05:08:58 PM] Checking file - swiftirc.ocx
[12/13/2012 05:08:58 PM] Checking file - SwiftKitData001.skd
[12/13/2012 05:08:58 PM] Checking file - SwiftKitData002.skd
[12/13/2012 05:08:58 PM] Checking file - Help.chm
[12/13/2012 05:08:59 PM] Checking file - WorldInfo.ini
[12/13/2012 05:08:59 PM] Checking file - Tips.ini
[12/13/2012 05:08:59 PM] Checking file - Links.ini
[12/13/2012 05:08:59 PM] Checking file - swiftirc_text.xml
[12/13/2012 05:08:59 PM] Checking file - rsmap
[12/13/2012 05:08:59 PM] Checking file - basswma.dll
[12/13/2012 05:08:59 PM] Checking file - Themes.ini
[12/13/2012 05:08:59 PM] Checking file - screenshot.wav
[12/13/2012 05:08:59 PM] Checking file - notify.wav
[12/13/2012 05:08:59 PM] Checking file - warning.wav
[12/13/2012 05:08:59 PM] Checking file - hand.CUR
[12/13/2012 05:08:59 PM] Version check done
[12/13/2012 05:08:59 PM] Now check assets...
