"Unexpected Platform Error" on Masteries Pages

AROB IS HOT·Nov 11, 2015·8 votes·12,855 views

I'm running the Mac client and since the 5.22 patch this morning I'm unable to edit or create new mastery pages. Every time I try I get the client error "Unexpected Platform Error". The changes I make to the mastery pages seem to save, but when I try to use them in game it shows I have no masteries, and when I go back to my masteries page after the game, it shows the page I edited earlier as blank.

This is incredibly frustrating and means I can't compete in lane at all. Essentially making the game unplayable until it's fixed.

If someone could please help me out with this I would be highly appreciative.

12 Comments

AROB IS HOTNov 11, 20155 votes

Read another similar thread and the problem seems to be caused by having the same name for two mastery pages. Deleting the page with the same name seems to have fixed this.

AAC WrathNov 28, 20151 votes

[{quoted}](name=AROB IS HOT,realm=NA,application-id=LqLKtMpN,discussion-id=LKdZs29t,comment-id=0000,timestamp=2015-11-11T21:01:01.240+0000)

Read another similar thread and the problem seems to be caused by having the same name for two mastery pages. Deleting the page with the same name seems to have fixed this.

This helps, thankyou

DG OhDarnFeb 27, 20162 votes

Had this problem as well, this solved it! Thanks!

SpadedDuceNov 12, 20151 votes

Had the same problem on windows, deleting all my mastery pages solved it.

drakonteiosNov 13, 20151 votes

Same here.

Joan121212Feb 8, 20161 votes

I have problem with my masteries pages. When I try to run some of my pages, It get written something like "Unexpected problem check out the forums or support pages" and ????