Make sure that ".NET Framework 3.0Sp2" is installed with your PC To boot POS printer utilities.

<Check points>
- Scope of Windows OS : Windows XP, Vista, 7 (Windows 2000 is not subject)
- ".NET Framework 3.0" cannot be not installed under the normal update or service pack by 
Windows Update. Install ".NET Framework 3.0" by designating "custom" or downloading files 
and a service pack from below web site in order to update to SP2.
- Windows Vista SP" and 7 are not subject because ".NET Framework" is already installed.

<Process>
Click "Start" -> "Control Panel" -> "Uninstall or change a program" to make sure that 
Microsoft .NET Framework is installed.

1. It is possible to update to SP2 by Windows Update by designating "custom" in case that 
".NET Framework 3.0" is already installed.
2. If it has not installed yet, .NET Framework 3.5 SP1 should be installed. .NET Framework 
3.0 SP2 and .NET Framework 2.0 SP2 are installed sequentially.

Note : The reason NET Framework 3.0 SP2 is required is that only .NET Framework 4.0 does not support older versions.
Refer to the below web-site.
　「.NET Framework 3.5」 SP1
　http://www.microsoft.com/downloads/ja-jp/details.aspx?FamilyID=ab99342f-5d1a-413d-8319
-81da479ab0d7
Make sure to reboot PC after installation.