If you find a bug in Spine please follow the steps below so we can quickly fix the problem.
Find your spine.log file at the location below and attach it to your post. The log file is overwritten each time you run Spine, so you should grab the log file immediately after a crash.
Log file location
Mac: <user home folder>/Library/Application Support/Spine/spine.log
Linux: <user home folder>/.spine/spine.log
Try to reproduce the error and provide detailed steps, this makes it much easier for us to fix things.
Example reproduction steps
1. Open the spineboy example project
2. Go to Setup mode
3. Step 3
4. Step 4
5. Go to Animate mode
6. Step 6 - Crashes <provide log file>