Actual Installer Forum

The answer to both your questions is Yes.

Unfortunately, the embedded command "IF" does not support checking for an empty string. We will add it in new version. If you need to perform some Windows commands, then use the following: ( but this does not support the MSG() or HALT() commands): File: <SystemDir>\cmd.exe Parameters: /C I...

To check for the specific value, use System / Commands:
File: IF <ExtraVar>=someValue
Parameters: MSG(message) or HALT(message)
Timing: Before Install

More information:
https://www.actualinstaller.com/help/commands.html

Please use the full installation for the new version of you app (that stops the service before install, and starts after the install). For the updating, configure it to just notify about updates, and direct the user to the new version setup file. Also, you may select the option "Restart Compute...

We will try to add it in next release. For now, you may try the following trick: use Custom Prerequisites: add a condition "Variable Less or Equal". The command field leave empty. Also, you need to edit the text for for this prerequisite: go to Interface/ Languages/ and double-click Englis...

For the commands MSG(), HALT(), STOP, EXIT, this is not supported.
For file operations, use the following: https://ss64.com/nt/if.html

We use a 3rd party component that does not support Multi-Processing.
I cannot tell you when this feature will be implemented in our software, but we'll do our best to make it.

Thank you for this information.
We will consider the publishing our software at MS Store.

We will try to add more exit codes in new versions. Please note that when using the installation with the settings (Interface "Classic Wizard", Install for "All Users"), the exit code will be 0. It is because the setup file is launched, by default, without elevation (manifest lev...

Thank you!
The updated files are available at:
https://www.actualinstaller.com/download.html