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When any project page is opened, for any project including sample projects, the drawing appears corrupted with extra, random lines appearing. The problem often does not occur opening the same pages on other workstations.
This is purely a display issue. Nothing is wrong or getting corrupted with the DGN file or data. This is an issue with the graphics card driver.
If that does not help, the following procedure has resolved the issue for some users but should be considered a temporary fix. The procedure limits the software to using DirectX 9 but the software was designed to run with DirectX 11, so limiting the software may have other adverse affects. The ultimate solution is to get a graphics card or driver that works properly and remove the QV_D3DVERSION configuration variable.
Keywords: spiderweb, spider web, spaghetti, corrupt, broken, stretched, random, distorted