Opening 0.99.3 projects in Ardour2

Anyone run into this, when I try to open 0.99.3 projects that contain plugin automation in Ardour2, Ardour segfaults. If I remove the plugin automation files from the automation directory the project loads fine, just without the automation. I can replicate this on 2 different systems with current distros (Studio64 32bit and Mepis 64bit) with Ardour 2.5, 2.6 and 2.7. On an older CCRMA FC6 system with Ardour 2.7 the projects load but without any plugin automation. The original projects were recorded on a CCRMA FC3 system. Any thoughts? Shy of hand editing the project files that is…