I have a bug on one of my drawings, I draw a line in certain parts of the drawing and instead of having the normal three nodes on either end and the middle, I get one node at one end which just moves the line as if it was a block. To stretch the line I need to use the stretch command and it doesn't respond to the extend command. I will get a screen shot up ASAP.

any help on this?

Some hints: line is part of a block, it is a ray - not line, the drawing was created in a non-Autodesk software, drawing file is damaged, grips are suppressed...