It starts to install itself and then when it gets to avastss.scr it stops and starts uninstalling itself
Below i part of the debug log where the error occurs
05.06.2011 00:44:50 file: Direct move of file: C:\Program Files\AVAST Software\Avast\aswChLic.exe
05.06.2011 00:44:50 file: Installed file:C:\Program Files\AVAST Software\Avast\aswChLic.exe
05.06.2011 00:44:50 file: Direct move of file: C:\Program Files\AVAST Software\Avast\aswRegSvr.exe
05.06.2011 00:44:50 file: Installed file:C:\Program Files\AVAST Software\Avast\aswRegSvr.exe
05.06.2011 00:44:50 file: Direct move of file: C:\Program Files\AVAST Software\Avast\aswRegSvr64.exe
05.06.2011 00:44:50 file: Installed file:C:\Program Files\AVAST Software\Avast\aswRegSvr64.exe
05.06.2011 00:44:50 file: Direct move of file: C:\Program Files\AVAST Software\Avast\aswRunDll.exe
05.06.2011 00:44:50 file: Installed file:C:\Program Files\AVAST Software\Avast\aswRunDll.exe
05.06.2011 00:44:50 file: Direct move of file: C:\Program Files\AVAST Software\Avast\AvastSvc.exe
05.06.2011 00:44:50 file: Installed file:C:\Program Files\AVAST Software\Avast\AvastSvc.exe
05.06.2011 00:44:50 file: Direct move of file: C:\Program Files\AVAST Software\Avast\AvastUI.exe
05.06.2011 00:44:50 file: Installed file:C:\Program Files\AVAST Software\Avast\AvastUI.exe
05.06.2011 00:44:50 file: Direct move of file: C:\Program Files\AVAST Software\Avast\sched.exe
05.06.2011 00:44:50 file: Installed file:C:\Program Files\AVAST Software\Avast\sched.exe
05.06.2011 00:44:50 file: Direct move of file: C:\Program Files\AVAST Software\Avast\VisthAux.exe
05.06.2011 00:44:50 file: Installed file:C:\Program Files\AVAST Software\Avast\VisthAux.exe
05.06.2011 00:44:50 file: Direct move of file: C:\ProgramData\AVAST Software\Avast\avast5.ini
05.06.2011 00:44:50 file: Installed file:C:\ProgramData\AVAST Software\Avast\avast5.ini
05.06.2011 00:44:50 file: Direct move of file: C:\Program Files\AVAST Software\Avast\Setup\settings.ori
05.06.2011 00:44:50 file: Installed file:C:\Program Files\AVAST Software\Avast\Setup\settings.ori
05.06.2011 00:44:52 file: Error direct moving file: C:\Windows\avastSS.scr
05.06.2011 00:44:52 file: filRenameOnReboot:!bSuccess
05.06.2011 00:44:52 file: filRenameOnReboot:bOnReboot
05.06.2011 00:44:54 file: ERROR:Install file:C:\Windows\avastSS.scr, code:0x00000020
05.06.2011 00:45:09 system: Uninstalling aswTdi.sys
05.06.2011 00:45:09 system: Stopping service aswTdi
05.06.2011 00:45:09 system: OpenSCManager
05.06.2011 00:45:09 system: OpenService
05.06.2011 00:45:09 system: OpenService, errcode: 0x00000424
05.06.2011 00:45:09 system: Service aswTdi stopped, errcode: 0x00000424
05.06.2011 00:45:09 system: Executing:C:\Program Files\AVAST Software\Avast\Setup\Inf\x64\netcfg_x64.exe /u sw_aswndis
05.06.2011 00:45:09 system: ERROR:Not executed:C:\Program Files\AVAST Software\Avast\Setup\Inf\x64\netcfg_x64.exe /u sw_aswndis, code:0x00000002
05.06.2011 00:45:09 system: Service aswNdis uninstalled
05.06.2011 00:45:09 general: Error: basWebRepUninstallPlugin for "Internet Explorer" returned 0x00000002
05.06.2011 00:45:09 general: Browser "Chrome" not found
05.06.2011 00:45:09 system: Executing:C:\Program Files\AVAST Software\Avast\aswRegSvr64.exe /u "C:\Program Files\AVAST Software\Avast\AvastGUIProxy64.dll"
05.06.2011 00:45:09 system: Executed:C:\Program Files\AVAST Software\Avast\aswRegSvr64.exe /u "C:\Program Files\AVAST Software\Avast\AvastGUIProxy64.dll"
05.06.2011 00:45:09 file: DllUnregisterServer success
05.06.2011 00:45:09 registry: Deleted registry: Software\AVAST Software\Avast
05.06.2011 00:45:09 registry: Cannot open reg. key:Software\Microsoft\Windows\CurrentVersion\App Paths\AvastUI.exe
05.06.2011 00:45:09 registry: RegLoadKey(HKEY_USERS, Av_S-1-5-18, C:\Windows\system32\config\systemprofile\NtUser.dat)
05.06.2011 00:45:09 registry: RegUnloadKey
05.06.2011 00:45:09 registry: RegLoadKey(HKEY_USERS, Av_S-1-5-19, C:\Windows\ServiceProfiles\LocalService\NtUser.dat)
05.06.2011 00:45:09 registry: Load registry hive ERROR_SHARING_VIOLATION
05.06.2011 00:45:09 registry: RegLoadKey(HKEY_USERS, Av_S-1-5-20, C:\Windows\ServiceProfiles\NetworkService\NtUser.dat)
05.06.2011 00:45:09 registry: Load registry hive ERROR_SHARING_VIOLATION
05.06.2011 00:45:09 registry: RegLoadKey(HKEY_USERS, Av_S-1-5-21-3263688514-1454080925-2385408068-1000, C:\Users\Cakewalk\NtUser.dat)
05.06.2011 00:45:09 registry: Load registry hive ERROR_SHARING_VIOLATION
05.06.2011 00:45:09 file: Removing file: C:\Program Files\AVAST Software\Avast\Aavm4h.dll
05.06.2011 00:45:09 file: Direct delete of file: C:\Program Files\AVAST Software\Avast\Aavm4h.dll
05.06.2011 00:45:09 file: Removing file: C:\Program Files\AVAST Software\Avast\AavmRpch.dll