Incredible support, dumb user (me)
I have made the change and is better. Sorry , it seems is not my day to make code edits.

I am receiving same error (line 1189) when I try to send an PM to a user that is on my ignore list. And I have set 2 way blocking.
Also if I put a moderator in the ignore list I cant send PM to him but this is not major problem because moderators can always send PM even if I have set them on ignore list.
Mode is blocking as it should suppose to do an user that is on ignore list.
I have updated the file so you can re download from link i sent to you on PM and check if something is wrong.