I have managed to fix the profile:river:iconupdate by deleting the "profile" directory in "mod" on my server and then re-uploading the "profile" folder from the elgg 1.8.0.1 install folder. You are correct that I didn't delete the "profile" directory from "mod" before I upgraded as it wasn't specified in the UPGRADE.txt.

I was also able to fix the "pages" issue by deleting and then re-uploading the "pages" directory in "mod".

I still can not find what is causing the river:create:user:default messages to be displayed. Any guidance with this last one is greatly appreciated.

I was able to fix the profile:river:iconupdate issue with the solution provided by Cash. Thanks for that.

Hopefully in the 1.8.1 release the UPGRADE.txt will be updated to reflect this.

I have created a new task so that the Core Team can have a look on it.

http://trac.elgg.org/ticket/3975

I looked through the 1.7 code for river:create:user:default and could not find it. That's why I think it is coming from a 3rd party plugin. Do you know how to search through code for a string? http://docs.elgg.org/wiki/How_do_I_find_the_code_that_does_x%3F

Anyone have any ideas about this? Even some information where the thumbnails are selected in the Elgg code would be so helpful.

Just wondering, could you temporarily make yourself a member of the group, then try to delete it once you're in it?

Anyone have any ideas about this? Even some information where the thumbnails are selected in the Elgg code would be so helpful.