Recalcitrant Summary Columns
You may change the widths of the Summary-Pane columns defined in your decoder and then observe that your changes appear to have no effect on the display. If this happens it is most likely because your column-display data have been stored in an INI file, and override what is in the decoder. Fixing the problem is an easy matter of editing the <My Product>.INI file (which you should find in your main installation directory). Find the section named "SummaryColumnWidths" then the entry named "Decoder <YourProtocol>", and delete the entry.
To explain this phenomenon more fully, what actually happens is the protocol analyzer uses the column widths defined in the decoder as initial defaults. Any time the user adjusts a column width manually then that selection takes precedence. The user can reset to the defaults at any time by selecting Reset to Default Widths from the Summary menu on the Frame Display window.