On the latest 2.7.0 firmware OpenVPNConnect crashes the WiFi pineapple when starting the VPN connection. This could be caused by the OpenVPN related patch or just by general firmware updates introducing an incompatible feature of some sort. Since this issue occurred upon a firmware upgrade, it is unlikely the core app itself is broke, but that one of dependencies needs to be re-worked.
Root cause analysis of the bug is still under investigation: