Access denied when pushing gem using Rubymine

Question

I'm developing a Ruby Gem using RubyMine 1.7.4, I have already build the gem but when I try to push it I get this error:

/usr/bin/ruby -e $stdout.sync=true;$stderr.sync=true;load($0=ARGV.shift) /usr/bin/gem push dogeify-1.0.0.gem -k 4393c168a8a078a5008e4697b800276a
Enter your RubyGems.org credentials.
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HTTP Basic: Access denied.

Process finished with exit code 1

I have seen an issue similar to this here, but the difference is that I never get a chance of writing my user name or password.

I also tried creating a ~/.gem/credentials file using the command given by RubyGems and it shows no error but if I open the file all I see is this:

HTTP Basic: Access denied.

Any ideas on what might be causing this error?

Answer 1

In the end, I edited the ~/.gem/credentials file from outside Rubymine to make it look like this:

:rubygems_api_key: "personal_key"
--- 
:rubygems_api_key: API_KEY

Once that was done, I try to publish the gem and it worked.

Anyway, I still don't know what is causing the error.