This is not save game compatible. Delete the Aurora.exe and AuroraDB.db files from the installation directory and then copy the two files from this patch into that directory.
v1.61 Patch (21Mb)
This fixes most (currently) outstanding bugs.
If you reported a bug in v1.5.1 and I didn't explicitly state it was fixed, please check it still exists in v1.6.1 before reporting it. Please do not report bugs from earlier versions.
BTW it is 1.6.1 instead of 1.6.0 because I left the designer mode button visible in the original and had to fix it. If anyone uses the 1.6.0, please don't report bugs. It is REALLY REALLY easy to screw your game in designer mode because the NPRs won't be able to deal with changes that you make