In Ram Elements it is possible through spreadsheet data entry to create an incomplete or zero length object. For example, if you add a member and enter the NJ node, but never enter the NK node and move on, that member is still in the database, but it has an undefined geometry.
The same kind of thing can also happen with a shell or deck (load area).
In order for the program to function, any such member either needs to be completed with valid incidence or deleted from the model.
The key to resolving the problem is selecting the problem member. Since it has no graphics it cannot be selected with the mouse, so the user needs to use Select All (Ctrl + A) or one of the other selection tools like Select - Members - Select all members first.
If any part of the model is hidden, be sure to Unhide (Ctrl +H) first, then Select All.
At that point the item will appear again in the spreadsheet so that the missing data can be added. If the intent is to delete the problem member, first select all to identify it's unique number. Now remember that number or write it down and clear the selection (one click in space will do). Next enter that number in the first row, first column of the appropriate spreadsheet and then only that one object is selected.
To delete it:
Note, you cannot be in the Finite Element View mode when deleting data.
Ram Elements Modeling [FAQ}