Comment 26 for bug 453931

I've been getting this problem on Windows Vista.

After reading a few comments, I decided just to try uninstalling/reinstalling.

I downloaded the latest build and tried to install that. It seemed to successfully remove the previous installation, but then when it tried to install it could not replace inkscape.exe.

I looked in Task Manager and although the InkScape application was not shown as running (just the installer was), I found 4 processes running inkscape.exe. After killing the processes I was able to retry the install.

The bug has gone (at least for now).

The fact that there were processes in memory running inkscape.exe, would possibly explain why some people find that rebooting makes the problem go away. (because that clears out all the extra processes)

It may mean that inkscape is sometimes staying in memory after certain events, and this is what causes this behaviour.

Hope that helps.