There definitely was an issue, I think it may have been a corrupt 3D View,
I deleted All the 3D named Views and opened a new one and did ZA and it went blank so deleted this.
Opened another 3D View Turned ON > Show Crop Region and was able to Zoom in and out on Fine View
Also changing the Projection Node in the Properties allowed Zooming in-out in fine Mode.
Not sure 100% what solved it?
Jay Colcombe
Autodesk Certified Instructor
Revit Architecture & Structure Certified Professional
AutoCAD Certified Professional
B.Sc. Hons Civil & Structural Engineering
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