If you think (or know!) you have found a bug in SCS then it will be helpful if you send a relevant Diagnostic File to email@example.com. SCS creates a diagnostic file each time you open a cue file (a .scs11 file), and then appends details of key and other events to the log during the course of the run. Diagnostic files are saved in a folder named "SCS Diagnostics" under "Documents" or "My Documents". The filenames are time-stamped and you can delete any files you wish from this folder. Note that SCS will delete diagnostic files more than 30 days old.