This is especially common on Macintosh IIfx, si and certain other 68030 Macintosh computers. However, this will still occur with other model computers, just not as readily. Any users with the 68030 computers that use the location bar should use a newer version of Claris CAD.
The easiest way to reproduce this problem is to:
-Select the Rectangle tool.
-Click and drag in the document.
-While dragging, type H and release the mouse.
-Type a value, tab to V and type another value.
- Click in the document to enter the typed values.
Guidelines will be locked in the document and almost any subsequent action will cause the system to bomb.
Note: This has been fixed in 2.0v2.