The current version of FrameScript is version 6. According to the official website, the software is compatible with operating systems from Windows XP up to Windows 10, while Windows Server 2008 is among them. However, they also said that version 6 is the only one supported, which means that version 5.2 might not be able to support Windows Server 2008. You can try, if you still have the setup package, but for maximum compatibility, the latest version is recommended.
You can find more on the official website: https://framescr.com/zc/