Apple Installer failing in Catalina with ON1 Raw
I'm experiencing issues with Catalina in a new iMac.
For some reason, finding the Apple Installer seems to start ok; but then abruptly fails.
In this case with ON1 software; but I've had the same with some drivers for HP printer.
Had been having trouble trying to update from 10.15.3 the computer arrived with, along with some software not installing; after a few attempts, managed a restore that installed 10.15.5.
I hoped issues would be resolved now; yet here's the Installer stopping.
And while error message says I should contact the software manufacturer, I suspect there is an issue with Apple's Installer; there are other messages online about problems with this, but I haven't seen a solution that works for me.
In case useful, lines from the log here, from the point error noted:
PackageKit: ----- Begin install -----
PackageKit: Install
Failed: Error Domain=NSPOSIXErrorDomain Code=2 "No such file or
directory"
UserInfo={NSFilePath=/private/tmp/PKInstallSandbox.XXXXXX} {
Install failed: The
Installer encountered an error that caused the installation to fail.
Contact the software manufacturer for assistance.
IFDInstallController
F01220 state = 8
iMac 27″, macOS 10.15