In order to fix the issue, you will need to coy and paste the Tab.ttf font in the (C:) > Windows > Fonts folder. The font comes bundled with the installation package of the program. Navigate to the official web page, click the TABrite Freware Full Program button, save the file to your computer and extract the package using WinRAR or WinZip. The package will contain the following files:
After you copy and paste the Tab.ttf file in the Fonts folder, download and install the latest version of DirectX and launch the Tabwin43 program.