Comment 2 for bug 488542

This is not a bug. It's normal expected behaviour for just about any program. Very few things actively support multiple installations of different versions.

Putting these things in different channels (official release (e.g. 0.48), official development release (e.g. 0.48pre1), unofficial development build (e.g. 0.47+devel+12f7a8935bc8)) is the only solution to this, but it's just far too messy to do it at all. The only practical way I see of approaching this is moving file extension registration into the Inkscape core itself, and simplifying the installer as much as possible.

Too complex, impossible to do well. Especially because we've still got to maintain backwards compatibility with older releases of the installer.

At this time, I'm not going to try to implement this. I think that "Wishlist" is the best importance descriptor for this.