My first thought is maybe there is something wrong with your Uninstall.exe file. I would try downloading the latest 'Uninstall.exe' from our git repository and see if that works for you. The latest version can be found here
https://github.com/RIEI/Vistumbler/tree ... /Uninstall
to manually remove Vistumbler you would need to do the following
1.) Delete the Vistumbler directory. That path should be showing in the registry at "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Vistumbler", "InstallLocation" (usually c:\Program Files (x86)\Vistumbler on a x64 system )
2.) Delete shortcut folders and shorcuts (some of these may not exist depending on the options you chose at install)
@ProgramsCommonDir & '\Vistumbler\' (ex. C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Vistumbler\ )
@ProgramsDir & '\Vistumbler\' (ex. C:\Users\[username]\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Vistumbler\ )
@DesktopCommonDir & '\Vistumbler.lnk' (ex. C:\Users\Public\Desktop\Vistumbler.lnk )
@DesktopDir & '\Vistumbler.lnk' (ex. C:\Users\[username]\Desktop\Vistumbler.lnk )
3.)Delete File Associations Registry
Delete "HKEY_CURRENT_USER\.vsz"
Delete "HKEY_CURRENT_USER\.vs1"
Delete "HKEY_CURRENT_USER\Vistumbler"
4.) Delete Uninstall Information Registry
Delete "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Vistumbler"
5.) (Optional) Delete Vistumbler temp folder (my uninstaller does not do this)
Delete %temp%\Vistumbler
4.) (Optional) Deleted Vistumbler Saved file direcory (my uninstaller does not do this)... make sure not to delete any saved files you want to keep
Documents\Vistumbler
