I'm having trouble exporting my chart to SVG. I have this fairly large file that I need to convert into an SVG so that I can blow it up to a 20x30 poster, everything converts fine except for the lines of the arrows that I used in my file. The tips of the arrows show, but the lines don't and then when i open the illustrator file I get this error on illustrator

"could not find a plug-in to read the linked file "r.pict". Choose repair to locate the missing file, repace to select another file or ignore to leave the linke unchanged"

any suggestions, help?? i'm assuming hte r.pict file has my lines?