VW 2008 design-layer viewport issue

[mma-IT]

Does anyone know why suddenly a referenced file, referenced via design-layer viewport, cannot suddenly be referenced and why this error message occurs:

This reference is not legal because it causes a cycle of design layer viewport style references

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[mma-IT]

Does anyone know if this error is implying a circular (infinite-loop) like reference issue? It says "cycle" that's why I ask.

If you place a design-layer viewport from file 2 into file 1, and then you create another file 3 and place a design-layer viewport from file 1 into file 3, along with perhaps a design-layer viewport from file 2, does this mean you have "double referenced" info into file 3 and thus cause a problem?

Clearly, doesn't it matter what layers you have turned on within your references?

Also, if I have a design-layer viewport from file 2 inside file 1 and also have a design-layer viewport from file 1, inside file 2, does that cause some kind of infinite loop referencing going on?

I have not found this problem before today.

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[mma-IT]

Apparently this is a bug that is eliminated in version 2008 SP3. So now the problem is gone.

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