Thank you Jay_B
I do use dynamic North Arrow - In fact, I customized it to include some Datum info that must accommodate our North Arrow and it works great!
Dynamic North Arrow, Scale bars and other dynamic is a great asset of Civil 3D. In particular, Dynamic North arrow allows easy manipulation of viewport’s modelspace view rotation angle to a desirable level by simply changing angle of the arrow in the North Arrow Property box (Ctl+1 or drop down Properties menu). Especially when you work with many tabs in one file and you need to manipulate many views. In the past, I used DVIEW command and a TWIST to get viewport view to a desirable angle/level and it was a cumbersome process. Dynamic NA is a big help in getting map view to a desirable angle in your viewport.
After reading topic from your link - I did my testing - indeed dynamic North Arrow causes the problem!
I did my own testing - delete or explode your dynamic arrow - this will disassociate your viewport dynamic link to it. Now you can reshape your Polygonal Viewport to any shape and it will never "freeze" your process.
On the other note - I inserted and associated a dynamic Scale Bar with my Polygonal Viewport. Now no dynamic North Arrow connected to a viewport, but Dynamic scale bar is associated with it. Editing/stretching by the grips viewport polygon will freeze again at some point in the middle of the process.
My conclusion: - Autodesk has a bug inside the Dynamic Link Association programming code that causes process of reshaping polygonal viewports using its grips to freeze, rendering file unusable until you reload the file.
My workaround solution:
As soon as you aligned viewport to a desirable angle (level) using North Arrow angle properties - explode your arrow. this will break the dynamic association link with North Arrow Object. Now you can reshape viewport to any shape you need without getting interrupted by "freeze"
After you done with reshaping operation - you can keep exploded NA if no more viewport view rotation/adjustment is expected or just reinsert new Dynamic North Arrow and connect to your viewport for potential angle manipulation in the future.
This is a bug in a Civil 3D that Autodesk need to address. Despite many "useless upgrades”, I see sometimes in new versions of AutoCAD - this one is actually very helpful - in my workflow anyway... Autodesk - please fix the problem – you paid good money by the professionals around the world for the software, and when a truly good tool comes in as improvement – it should work rock solid!
