I have previously successfully installed rstudio-server with `brew install rstudio-server` on a Mac OS X 10.11.4.

Now, I am trying to login to rstudio-server 0.99.902 without success. From the client side, I get a pop-up window saying -
&gt;&quot;RStudio Initialization Error&quot;, &quot;Unable to connect to service&quot;.

The user I am using has an user id of `1100`, so I do not think the problem is related to account permissions.

While running the daemon, when I try to log-in, the error showing up in `/var/log/system.log` is this:

&gt;rserver[1100]: ERROR system error 61 (Connection refused) [request-uri=/rpc/client_init]; 
OCCURRED AT: void rstudio::core::http::LocalStreamAsyncClient::handleConnect(const boost::system::error_code &amp;) /tmp/rstudio-server-20160803-68705-uhvyws/rstudio-0.99.902/src/cpp/core/include/core/http/LocalStreamAsyncClient.hpp:119; 
LOGGED FROM: void rstudio::server::session_proxy::(anonymous namespace)::logIfNotConnectionTerminated(const rstudio::core::Error &amp;, const http::Request &amp;) 
/tmp/rstudio-server-20160803-68705-uhvyws/rstudio-0.99.902/src/cpp/server/ServerSessionProxy.cpp:308

Crash report: http://pastebin.com/GYkFZ8fT


While running `sudo /usr/local/bin/rserver --server-daemonize=0`, when I try to log-in, no error is output to the console but I do get this error on a pop-up window in the browser: `Error occurred during transmission`.

Crash report: http://pastebin.com/kJMsPh6s


Additional info:

`rstudio-server verify-installation` returns `too many positional options have been specified on the command line`.

Running `sessionInfo()` from R console:

    R version 3.3.0 (2016-05-03)
    Platform: x86_64-apple-darwin13.4.0 (64-bit)
    Running under: OS X 10.11.4 (El Capitan)

    locale:
    [1] C

    attached base packages:
    [1] stats     graphics  grDevices utils     datasets  methods   base     




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Cannot log-in to rstudio-server