ProviderSuite 7.3 Release Notes are attached to this article.
If you are using Windows 7 and have an issue installing the updated Billing Manager applet, please confirm you have the 4.5 version of the Microsoft .NET Framework installed on your computer. Version 4.5 can be downloaded for free from Microsoft at this link. (.NET 4.5 comes pre-installed with Windows 8.1 and Windows 10.)
You can confirm your version of ProviderSuite as follows:
For the WebApp, the version is listed in the footer of each page, near the copyright notice.
For the Billing Manager applet, the version is listed on the Help > About screen.
For the Schedule Manager applet, the version is listed on the About screen (accessed by clicking the "i" icon in the upper-right)