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  1. #1
    Cannot Install Applications

    Member Since
    Feb 13, 2007
    Worthing, West Sussex, UK
    Your Mac's Specs
    27" iMac 3.1Ghz 16GB RAM, 1TB HD. iPhone 4.
    Rep Power
    Cannot Install Applications
    So I'm running Catalina 10.15.2 and today I wanted to install the latest version of Silverfast (scanning software) which I downloaded and I also downloaded the latest driver for my scanner to add support for Catalina. Both programs are made by different companies.

    When I install either all that happens is I get the spinning beach ball after I agree to the license agreement and I've left it for several hours but it makes no difference. I've also downloaded other software from Silverfast that also won't install and I've tried downloading software from other 3rd parties that also won't install.

    My security settings are set to allow apps from the App Store and identified developers, I've disabled firewalls but nothing seems to make any difference. I was able to update my Adobe apps through Creative Cloud so it looks like it just doesn't like letting apps install directly via the OS but that's just a guess.

    Any ideas?

  2. #2
    Cannot Install Applications
    ferrarr's Avatar
    Member Since
    May 21, 2012
    Pawtucket, RI, U.S.A.
    Your Mac's Specs
    L2014 Mac mini macOS 15, iPhone 11 iOS 13, 1st Gen 12.9" iPad Pro iPadOS 13
    Rep Power
    If you look in System Preferences > Security & Privacy, do the apps appear there, under the General tab?
    Please backup. Everything has a life cycle, unexpected and warning free. Nothing will last as long as you want it to.
    PS: When there is an accident or error, is the tool to blame or is the fool to blame?

  3. #3
    Cannot Install Applications
    harryb2448's Avatar
    Member Since
    Nov 28, 2007
    Nambucca Heads Australia
    Your Mac's Specs
    iMac, i7 4GHz, 32GB memory, 1TB blade drive, OS X.15.5.
    Rep Power
    Silverfast version 8.8 is available for Catalina.

    SilverFast 8.8 is macOS Catalina compatible :: LaserSoft Imaging
    Using OS X.7 or later make a bootable USB thumb drive before running Installer!

  4. #4
    Cannot Install Applications
    Slydude's Avatar
    Member Since
    Nov 16, 2009
    North Louisiana, USA
    Your Mac's Specs
    2.8 GHz 2008 MacBook Pro 10.11, 8 GB mem, iPhone XS, 2015 iMac 16 GB 10.15.5 beta
    Rep Power
    Are you seeing a message that suggests the software is from an unidentified developer? if so, that is due to a change in the Gatekeeper security software. Under Catalina you have to take an extra step to enable the option to install unsigned third-party software. See this video which includes a fix if you don't mind using Terminal. See here for a bit of detail.

    I'm not all that familiar with the code signing process but not every piece of unsigned software is malware or otherwise but be careful. Be especially careful running Terminal.You can do all kinds of harm to your system.
    I can wire anything directly into anything. Iím the Professor

    Prof Hubert Farnsworth

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