Make sure you are running the latest build, 070122! In Caesar 5.0 when I use the save command before using the error checker there is no convergence running the calculation after error checking.
[Save] has nothing to do with convergence. When you click the [Error Check] button, the first thing that happens is the model is saved.
If you aborted the run, then the job files don't get zipped back up into the ".C 2" archive. Use the [File Open] and then change the "Drop List" at the bottom to "_A".