JS File Extension Error

Windows

1. Open an elevated Command Prompt window.

2. Type the following command and press Enter: regsvr32 %systemroot%\system32\jscript.dll

3. Close the Command Prompt.

4. Download jscript_fix.zip from Winhelponline

5. Unzip the archive, and double-click on the .reg file to apply the settings. The fix applies to all versions of Windows, including Windows 10.

6. Click Yes when asked for confirmation.

7. Restart AMRPC

Source