Dear Jeremy,
please replace your current "InstallAware Visual Studio 2017 Extension" with the latest version available from the on-line Visual Studio Marketplace.
To proceed;
- as first uninstall the current version of InstallAware Visual Studio Extension. To uninstall it, start Visual Studio, then from the "Tool" menu select "Extension and Updates". A list of installed extensions appears in the center pane, select the "InstallAwareVsPackage" (v.5.0) and then UnInstall.
Follow the on screen instruction to complete the process (you will need to close and then to start Visual Studio).
- Finally; re-start Visual Studio then once again; "Tool" -> "Extension and Updates". The Extensions and Updates dialog box opens and In the Extension Manager, choose and expand the On-line node. Type "InstallAware" into the
search box and once the new " InstallAwareVsPackage" Extension is listed, click the "Download" button.

- IaVSExtension.png (35.52 KiB) Viewed 5359 times
The latest version of the "InstallAwareVsPackage" is "5.0.3.6".Hope this helps you.
Regards