The connectivity errors just mean nothing's routed. After routing they should go away.
I too am new and having the same error. I would like to know if your problem did in fact GO AWAY, or did you discover a FIX?
Here is what I did;
In PADS Layout, placed parts, started routing, VERIFYING DESIGN;
Now on pads or vias there are yellow and red error markers that according to the manual mean
"testability and connectivity" errors.
ERRORS OCCUR ON
-pads with traces (for example on a ground and/or power)
-pads without traces (again on a gnd/pwr)
ATTACHMENT is just a picture of the error.
Please explain your final result to these errors,