I just recently upgraded to the the 2012 solidworks and so far I am experiencing more and more problems.  I needed to edit a bolt pattern on a housing and when I go to edit the sketch it won't let me select any of the lines.  I cannot dimensions them or view any relations on them since they cannot be selected.  Next to my cursor is a dimension symbol but I dont have smart dimension or any for of dimension selected.  I even went and deleted the old feature and tried to create a new one but the same thing happens and I cannot dimension the lines.  Also the program has crashed twice since the hour ive been running 2012 v. 3.0.  This is getting rediculous.