the OLD version is what I have current installed - I am trying to upgrade to the current build but get this error
as i understand it windows always keeps a copy of the last installer used for any application install/update which is then used to roll-back a patch before applying a new one, or as part of complete application uninstall.
I deleted this copy of the installed build 5.6.31028.18305 - and so the installer for the new build is unable to locate it to proceed with the update
I have had this issue with updates in the past and as I typically keep backups of all patches I would usually just point the installer to this copy and the update completes. The problem is I did not keep a copy of the 5.6.31028.18305 patch MSI to point to … so was hoping to download it again
McNeel Support have already suggested the installation is corrupt and to completely remove Rhino and re-install … which is time consuming and unnecessary based on previous experience of this issue (i.e just point it to the missing .msi which i usually keep)
but if previous builds are not available to users then i guess i have no alternative