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Same Error here, with same things:
Trying to create new drawing through acadiso3d.dwt or acad3d.dwt - Fatal ERROR
Trying to change visual style - Fatal ERROR...
AutoCAD 2016
Was sending reports after that (unfortunately, did not entered email - so I dont remember IDs of reports) - fisrt one said, that you should install SP1. Done, but no effect. Same errors.
Was resetting AutoCAD settings to defaults. Not helped.
Any Ideas where can be the problem?