However, the current export script require a very little modification to support PS Element. Here is how:
1.Open the script file in a text editor.
2. Search for the line:
layer = layer.merge();and change to
//layer = layer.merge();* In fact, this line of code seems not needed and is not supported in Element. It just merge the groups with [merge] tag before saving the png. So commenting it out will actually make the export faster. Spine team if you hear me, please validate this.
3. Run the script in Photoshop Element.
It is a little different to run a script in Element than the normal version.
Everytime you want to run the script, just drag the script file to the canvas to bring out the export dialog.
You can try out the Element with trial version and see if it works for you. e.g. Checking if some features are missing that will affect you. Normal illustrations with just layers, clipping mask, adjustment layers should be fine.
Simple as that, you can buy a PS Element with just 69.99 USD which is still cheaper than the cheapest photograhy plan 9.99/mo for a year.
If you also use PS for other purpose, you have no luck.