I searched for the answer, but grew impatient.
Acad 2007: I have a drawing that won't allow zooming IN beyond a certain level. Zooming out, no problem. While I've encountered issues with zooming out (resolved by changing/turning off limits, regen) I've never encountered an issue with trying to zoom in closer.
In the same drawing, and on a different note: the leaders are displaying only one grip and when attempting to stretch from any part, the whole leader moves. Same thing with linear dimensions. I can't find a variable to resolve this.
I don't believe the drawing was created or saved in a newer version, since the message "This drawing has been saved by a newer version..." never arose.
Any solutions to either issue would be greatly appreciated.