Error loading SVG files to Parts Editor

Here's how to workaround with Illustrator CC.
First, save file as SVG tiny 1.2 format.
Secondly, open saved SVG file with text editor and it will be looking like this.

<?xml version="1.0" encoding="utf-8"?>
<!-- Generator: Adobe Illustrator 19.0.0, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
<svg version="1.2" baseProfile="tiny" id="svg2993" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"
	 x="0px" y="0px" viewBox="-270 373.9 53.1 94" xml:space="preserve">
...

That svg tag is missing width and height attributes.
Third, add them manually like this.

<svg version="1.2" baseProfile="tiny" id="svg2993" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"
	 x="0px" y="0px" width="53.1px" height="94px" viewBox="-270 373.9 53.1 94" xml:space="preserve">

viewBox attribute's last two values are exactly width and height as pixels.

Finally, save it and load with fritzing.