My installer needs to be fixed, it will not be for this release (181.20).
The problem is that it assumes you have a C:\ drive, now for most thats fine,
but if for some reason you do not it will fail to install.

This means I will have to re-write part of the installer to include system variables,
hopefully I can get it fixed next time round. With my 181.20 I will include a non installer version for users
without C:\ drives as a workaround.