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Disappearing Viewports -

Question

I've got a project that I've drawn the plan and the elevations in AutoCAD --- learning and working at the same time...

 

I've set up VW 'shuttle files' for both the plan and for the elevations.

On my main design file I have referenced viewports for each of the shuttle files on separate design layers (ExRwef, and ExRef-ELEV) and also on separate classes (V-XR ELEV, and V-XR PLAN) .

 

I've made an elevations sheet layer and placed viewports to the 4 elevation views from my shuttle file cad reference.

All looked good.

 

Then I went to a design layer to work a bit, then I went back to the elevations sheet layer...

 

3 of the 4 viewport had disappeared:

1025706549_invisableviewports.thumb.jpg.fa61d8481c77c0c5572e0ffdb8ad3a1b.jpg

If I pan around they become visible while panning. If I zoom they become visible while zooming.

 

If I select them their outline becomes visible and selected:

193230420_invisableviewports2.thumb.jpg.e696a7eb9df7f6961d758e0ccc09254f.jpg

 

If I export to PDF they print as visible:

665540279_invisableviewports3.thumb.jpg.6197dabc20460c1b63faa1f1f4f28d13.jpg

 

But I can't see them.

 

I take that back -  as I was writing this 2 more became visible... for no apparent reason. 

Frustrating!

 

 

I have a decent older professional graphics card (AMD Firepro v5900) and have no problems in any other 3D, drafting, or design programs.

 

Ant thoughts?

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If you restart your computer does it behave?  Other people will understand this way better than me, but I think that could be a graphics card or graphics memory issue.  You might want to give tech support a call.

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Does it correct the problem if you change the Navigation Graphics to something other than "Best Performance" (in the Display pane of the Vectorworks Preferences)?

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I thought it might be my graphics card, as it was an older AMD FirePro V5900.

 

I've updated to a current model, AMD Radion Pro WX 3200 and am still occasionally experiencing this issue.

 

I know in AutoCAD there was a set limit to the number of view ports you could allow to refresh per sheet.

This was an adjustable number that was user controlled.

 

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