I still can't get it to work with the suggested changes. Is anyone interested in setting this up for a bounty.
If you want to give someone a bounty to fix your error, give it to maaku. He gave this solution, that worked for me and for slippsnapp:
{sub_dirs, ["apps/ecoinpool", "apps/ebitcoin", "rel"]}.
{deps, [
{protobuffs, ".*", {git, "git://github.com/basho/erlang_protobuffs.git", "e0f5f6ea4c3dcb4e7b824496d2b48333fbd5a8c8"}},
{ejson, ".*", {git, "git://github.com/benoitc/ejson.git", "820ff1725008e664293b88e13c16193857afc072"}},
{oauth, ".*", {git, "git://github.com/refuge/erlang-oauth.git", "f332b77371d334d0faa13e106d0c36f948b325b6"}},
{ibrowse, ".*", {git, "git://github.com/cmullaparthi/ibrowse.git", "eb8b62cf84ccae141700c8fd251277df8be27f28"}},
{mochiweb, ".*", {git, "git://github.com/mochi/mochiweb.git", "b7f3693a9008de6d31a67174f7184fe24093a1b4"}},
{couchbeam, ".*", {git, "git://github.com/benoitc/couchbeam.git", "7148bbdb19aca91b7b74e5392a23c94d33ca4e27"}},
{log4erl, ".*", {git, "git://github.com/SemanticSugar/log4erl.git", "ec580f75ef9e28dfcfac92dc0d42c435520bd3d7"}},
{mysql, ".*", {git, "git://github.com/elbrujohalcon/erlang-mysql-driver.git", "1dd4e22a80546fa1bda81607d6397a549fd791ae"}},
{epgsql, ".*", {git, "git://github.com/wg/epgsql.git", "fc434772276475ac4e5b0bed6b18ed4732502156"}}
]}.
Backup your test_launch.config, delete the whole ecoinpool directory, change the dependencies in rebar.config to the aboves, and run:
$ ./rebar get-deps && ./rebar compile
This error we were getting happens because of incompatible dependencies. It was getting the master branch of everything, and ecoinpool was designed almost an year ago, so maaku changed the dependencies of everything in his rebar.config to someday close to when ecoinpool was designed.