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When I click Modify cover or I try to update avatars, I no longer have the option to upload. I'm just given a notification box with no error. I tried to upload to the latest Jomsocial and Socialize template, but this didn't help the problem.
This had something to do with the Member Homepage plugin we were using. Unfortuantely I had to disable it to regain the same functionality, so if there is anything we can do to accomplish the same goal WITHOUT breaking JomSocial Functionality, we would find that very valuable.