In some cases, the installation of FlexiCapture 12 can fail with the following error:
"Error 1722. An error occurred with this Windows Installer package. A program run as part of the setup did not finish as expected. Contact your support personnel or package vendor.
Action Launch_InstallTool.exe_install, location: C:\ProgramFiles\ABBYY FlexiCapture 12 Servers\InstallTool.exe"
This error means that not every necessary external component was installed and/or enabled.
Check the list of requirements in the ABBYY Online Help, System and software components section: http://help.abbyy.com/en-us/flexicapture/12/admin_guide/demo_requirements
For example, in Windows 10 you can check the installed components of IIS and .NET in Control Panel -> Programs and Features -> Turn Windows features on or off. Please refer to the screenshots below.
Check that all these features are enabled in your system. Installing and enabling missing components should resolve this error.