Hi, I participated is GSoC 2013 and wrote code for Inkscape. I was working in WIndows last year and sometime around December I decided to port my branch to Linux (Ubuntu 12.10 , in my case) . Strangely, I am caught up with this error, which doesn't trouble me at all in my Windows branch: "ui/dialog/dialog-manager.o: In function `Inkscape::UI::Dialog::RecolorArtwork::getInstance()': /home/arshdeep/Desktop/InkS-Repo/recolor/src/./ui/dialog/recolor-artwork.h:38: undefined reference to `Inkscape::UI::Dialog::RecolorArtwork::RecolorArtwork()' collect2: error: ld returned 1 exit status " This happens only when I am associating a dialog box of the tool that I made last year thorugh the codeline: " registerFactory("RecolorArtwork", &create<RecolorArtwork, FloatingBehavior>); " inside of dialog-manager.cpp. The RecolorArtwork class is mirrored directly from FillAndStroke class and I can't pin point why this error crops up ? If someone can help , please do so. -- Arshdeep Singh Third Year, Computer Engineering Delhi Technological University Ph: +91-9654115614 https://sites.google.com/site/adsingh1729/home