This is usually caused by one of the following two issues:
- You do not have enough permissions. Please ensure that you are logged in with administrator rights, and for Windows 7 machines, please ensure that all the Avalanche applications including the License Manager have been set to "Run as Administrator" by right clicking on the shortcut and under Properties>Compatibility setting this option.
- The other most common issue is due to a corrupt installation. Please remove the currently installed Spirent software. Next download a clean copy of the Spirent testCenter GUI, the 8.4.13 TCL package and the Avalanche L4-7 application from the Spirent Support site (support.spirentcom.com). All three software packages can be found under the Download>Spirent TestCenter section. Once you have the software downloaded, please reinstall the packages in the above order with administrator rights.