Please raise your Q&As about Eclipse debugging here as comments and we'll answer them.
Q: I am getting "The chosen operation is not enabled" when I try to set a breakpoint on a COBOL line.
A: Elastic COBOL debugging environment uses a "smap" or symbol mapping file to map symbols and lines of code between the COBOL world and the Java world. An Eclipse "Clean" operation or other removal of the "smap" files from the file system outside of Eclipse will generate this message. Use the Eclipse "Project" > "Build All" menu command to rebuild these "smap" files.