Autodesk Inventor

[#1]

I have Inventor 2012.  When I work on a new model, I have the Yellow and Green dots when sketching. 

However if I work on an older model, the dots do not appear.  I have everything on. See attachments.  Not sure what else to check.

[#2]

On an existing sketch you will have to use show constraints to see the conincident constraints (yellow boxes).

[#3]

Quick key to show Constraints is F8, just for reference.... F9 turns them off.

[#4]

Actually didn't mean the grips.  I meant the yellow dot that follows the cursor and the green dot that shows up when your cursor is on an end point, midpoint or intersection point.

[#5]

[#6]

OP's first pic shows those already set.

Just a guess since you mentioned older files, is it possible these files have not been fully migrated or saved up to the latest version you are using?

[#7]

Turns out it is my part that is causing the problem.  After leaving Inventor and going back into it, things went back to normal.  However the more I worked with the part, it became progressivly unstable.  Not sure why part is doing that.

[#8]

if possible, post your file/s here for others to look over.

I don't have 2012 myself, still on 2011 but maybe someone else can take a peek into your model and prehaps find something odd in there.

[#9]

Oops, missed that.

[#10]

Have you done a rebuild on the part?