This issue is usually related to shortcuts in the Windows fonts directory. Navigate to your fonts directory:
Start > Control Panel > Fonts
Windows Vista / 7
Start > Control Panel > Appearance and Personalization > Fonts
Look for the the shortcut icon on any font listed. Once located, delete the shortcut:
Some third party fonts may also cause this issue. If you have added any third-party fonts to your fonts directory or if they were installed by another program, please temporarily relocate those to another directory and then try Jing again.