Hi stefan,

re:
> when using v4 beta under Windows 10 and exporting as .obj i always have to expand the
> dialog box and tick the merge vertices box.

That could happen if your moi.ini file is in a location where MoI.exe does not have write access permission.

Have you possibly moved your moi.ini file into the MoI install folder instead of having it in the default user data folder? If so then you would need to run MoI with elevated privileges (using "Run as administrator") for it to have write access to it.

- Michael