MT300N can't connect wifi in repeater mode

I’m using the latest testing firmware for MT300N but whenever I try to connect in wisp/repeater mode the router shuts down leaving only the power led on and it stays that way until it decides to come on whenever it feels like (like it has a mind of it’s own). Not even a reboot brings up the Wi-Fi. I reverted back to v1 and it works ok. How can I fix this?

Can you repeater to other hot spots to try?
Could you please provide the hot spot channel and htmode information.