You can probably get rid of most of these messages by editing the preferences.xml file. In the color-interpolation-filters property, replace all occurrences of 'linearRGB' with 'sRGB' instead. There should probably be seven occurrences, one for each tool. Below is the typical entry for the 'rect' tool. I have no idea what the impact is if you are using filters, but if you are not using filters, this should be a safe change to make. Unfortunately, the original default behaviour, and the error message, will probably return if you edit the default style preference for that particular tool. As a matter of principle, I think it would be desirable to make this preference editable using the GUI. It does not seem reasonable to have data in a preferences file that is not accessible using the GUI unless there is absolutely no ambiguity as to what the default value should be, in which case it should be hard-coded and not accessible at all, but perhaps I have not looked hard enough to find it in the GUI. <eventcontext id="rect" style="color:#000000;color-interpolation:sRGB;color-interpolation-filters:linearRGB;fill:none;stroke:#000000;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none;stroke-dashoffset:0;marker:none;visibility:visible;display:inline;overflow:visible;enable-background:accumulate;clip-rule:nonzero" usecurrent="0" width="94.285713195800781" height="260" rx="0" ry="0" /> hth, Alvin Penner -- View this message in context: http://inkscape.13.n6.nabble.com/Powerstroke-adding-deleting-width-nodes-... Sent from the Inkscape - Dev mailing list archive at Nabble.com.