Here's a workflow that seems to work in Inkscape to import a svg into m02 - -
1) You don't need to change the background to transparent as per SrPx - though thats a nice tip - (hated working with that white page on the screen when I would launch Inkscape!)
2) I have been working with a outlined design that has various "holes" in the design - but this works with outlined or solid shapes as well - ie - circles, squares, etc
3) Select the shape(s) and then at the top of Inkscape - go to "Path" and then select "Stroke to Path"
4) Once you've done that, go to "File / Save As..." - you can leave the default settings - and you can also leave it to the default "Inkscape SVG.svg" setting - then click "Save"
5) You should then be able to import the svg file into m02 -(ADD / 3D TEXT/SVG / SVG) - you will just have to play around with the dialog box with the "Use" and "Hole" checkboxes to get the desired objects (if it shows up in white, that's what will be imported and used in m02
Hope this helps! So far its been working for me...but that above method using GIMP also works.