I released another update. You’re invited to try it! http://papas-best.com/stlviewer_en

- fixes zoom direction not being saved
- fixes a few crashes
- fixes some UI glitches (sizing, high-DPI displays, etc)
- adds a setup dialog (people complained that they assumed the installer crashes or hangs because there was no feedback)

aardvark, the installer will now create the “Preview” context menu entry. However, due to reasons I haven’t quite figured out, this will only work on Windows 7, not 10 …