I have been worrking on this model for several weeks without problems. I have done something within Solid Edge that keeps me from selecting elements in the 2D model mode. The select tool is always highlignted but I can only select the objects that are within a specific active layer. Previously, I could select elements in any layer without activating it. I have opened prior revisions of the same drawing and now get the same results. How to I reset/? How do I make all layers active at the same time?
Additionly, the 2D model now appears in one of the tilte block pages. Is this the problem?
According to your description it looks like you have changed the Select Tool settings in Select Options dialog box.
When clicking the Select tool, the select toolbar opens. The first command in this toolbar is Select options. Click on this command and new dialog box will open. In this dialog box, select the first option, which is All Layers. See the image for better explanation of the command.