Note from Pearson:
PowerTeacher Gradebook 1.5 will not launch on a Windows Clients if Java 1.6.0_12 has been installed.
When trying to launch PowerTeacher Gradebook 1.5, an Application Error will appear.
PowerTeacher Gradebook 1.5 will launch.
An Application Error message appears and PowerTeacher Gradebook 1.5 will not launch.
Revert to Java 1.6.0_11.
In Control Panel > Add Remove Programs uninstall Java Update 1.6.0_12
If it was a fresh install of Java 1.6.0_12 then uninstall it and download and install 1.6.0_11Click here to download Java 1.6.0_11
Check that in the Java settings in the Control Panel that it is set for Direct Connection and not using a proxy server.