Since you're on the latest, we'll want to gather some additional information about what's going on there. Would be willing to send the following in an email to us at
support@splasm.com ?
1. A System Information report. This report tells us how your Mac is configured. You can create one of these reports by clicking the Finder icon in your Dock, going to the Go menu at the top of your screen, clicking the Utilities menu item, opening System Information.app, then going to the File menu and clicking the Save... menu item.
2. Your recent system.log files. These files contain routine status messages from apps, but they also contain any error messages these apps may have logged, in addition to any error messages the Mac itself may have logged. We need to see these to get an accurate picture of when the app started to misbehave and to possibly explain why. You can find these by clicking the Finder icon in your Dock, going to the Go menu at the top of your screen, clicking the Go to Folder... menu item, then going to the /var/log folder. Send every file whose name begins with the word "system".
Thanks!