"Your account does not have access to any i2b2 projects" in admin webclient

My installations of versions 1.4 and 1.51 both blocked upon attempt to invoke the webclient (now 'admin' in 1.51). On attempt to login as i2b2/demouser, I receive the message quoted above. I see in conversations at https://www.i2b2.org/software/augrepo.html that others have encountered this problem, and resolved it by installing curl. I do have php-curl installed, however, and the problem persists.