[FDS-86] My breakpoint fires, but the editor doesn’t highlight the line I am on

The likelihood of this problem is caused by the Source Tab on the launch configuration being incorrectly configured. The source tab must be mapped to the project that contains the source files, or to the default (which is all the projects). If the project that contains the source code is closed, FusionDebug can’t tell Eclipse to highlight the code. Take a look at the following support articles and check to see that the source tab is correctly configured for your project:

FusionDebug 1.0 Finds the Wrong Source File
Setting up a Debug Configuration in FusionDebug