Default Link2sd issue with Stock DDKT3 by Raj Joshi

Everytime I use stock ddkt3 flashable rom (by Raj Joshi) & run Link2sd app, I got this msg. while trying to create ext4 script.
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Then if I exit Link2sd app & reopens it again, it force closes. After all this, when I install any app (tapatalk for e.g.) the phone reboots during installation process & that app is not found in the app drawer when phone has rebooted.

I'm unable to use Link2sd

Pls. help!!