Ok. I found the extension-errors.log, but it doesn't mention pdf or swf extensions.
I'll try that Sysinternals tool. Thanks.
Extension-errors.log --------------------------------------------------------------------------- Extension "AI 8.0 Output" failed to load because a dependency was not met. Dependency: type: executable location: path string: gs
Extension "Corel DRAW Input" failed to load because a dependency was not met. Dependency: type: executable location: path string: uniconv
Extension "Dia Input" failed to load because a dependency was not met. Dependency: type: executable location: path string: dia description: In order to import Dia files, Dia itself must be installed. You can get Dia at http://live.gnome.org/Dia
Extension "DXF Input" failed to load because a dependency was not met. Dependency: type: executable location: path string: dxf2svg description: dxf2svg may come with Inkscape, but is also at http://dxf-svg-convert.sourceforge.net/
Extension "XFIG Input" failed to load because a dependency was not met. Dependency: type: executable location: path string: fig2dev
Extension "GIMP XCF" failed to load because a dependency was not met. Dependency: type: executable location: path string: gimp
Extension "Random Point" failed to load because a dependency was not met. Dependency: type: plugin location: path string: randompnt
Extension "Random Position" failed to load because a dependency was not met. Dependency: type: plugin location: path string: randompos
Extension "Sketch Input" failed to load because a dependency was not met. Dependency: type: executable location: path string: skconvert
Extension "Windows Metafile Input" failed to load because a dependency was not met. Dependency: type: executable location: path string: uniconv