I increased both User side and Admin back end memory limit to 256M and activated “internal cache”. I tried to upload an avatar again and this time got this:
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Service Temporarily Unavailable
The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later.
Web Server at zoldos.net
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It has to be Buddypress as I added an avatar just fine BEFORE I installed it and have never seen this error before…