I was able to resolve the problem, but I'm not sure of the cause.

It looks like some empty objects got created and added to the timeline that weren?t tied to any bones or sprites. I think this caused the null value error in the instanceProto.findSprites function of the runtime.js where it is trying to get all of the ?timeline? elements out of the SCML around line 804.

I deleted these empty objects from within the Spriter UI and made sure they were also removed from the SCML and re-imported the SCML into Construct and it now runs fine now.

Here's one of these elements from the SCML...

<timeline id="21" name="object_000">

<key id="0" time="97" spin="0">

    <object pivot_x="0" pivot_y="1"/>

</key>

<key id="1" time="196" spin="0">

    <object pivot_x="0" pivot_y="1"/>

</key>

</timeline>

I've successfully imported and tested a Spriter object that contained one entity with one animation into my Construct project (yay!). But when I went back to my Spriter project and added a second animation to the entity and then re-imported the SCML file back into Construct, I am now getting the following JavaScript error: "Cannot read property 'nodeValue' of null" on line 821 of Spriter_plugin.js

I've tried all the basics I can think of, clearing browser cache, testing on another browser, going back to the previous working version of the Spriter project with one animation etc. without success.

I am developing using the 7/18/13 version of the SCML plugin, Spriter version B4, Construct 2 release 139 on a Win 7 machine with the Chrome browser v28