Puppet users - May 2014 - Implicit conversion of string to integer error with ec2_userdata

I recently installed a puppet 3.4.3 puppetmaster. I am working on a project 
to convert all of our manifests over from 2.7 to 3.4.3. While trying to run 
a master/agent setup on the puppetmaster itself, I am getting the following 
error:

"Error: Could not retrieve catalog from remote server: Error 400 on SERVER:
no implicit conversion of String into Integer."

The line in question is a  call to a custom function. The problem seems to 
go back to the "ec2_userdata" facter fact. If I alter the line 
"userdata.split" to just "userdata" in 
/usr/lib/ruby/vendor_ruby/facter/ec2.rb everything starts to work. What's 
interesting is that when I alter my function to not even use this variable 
(for debug purposes) it still throws the error. This leads me to believe 
that this fact is getting loaded no matter what and ultimately causing the 
problem.

I saw in the Facter 2.0.1 documentation that arrays are now accepted but 
puppet does not have them turned on by default. I set stringify_facts to 
false in both main and master sections of puppet.conf but the problem still 
persists.

Any help would be appreciated. Here is my environment:

puppet 3.4.3
facter 2.0.1
ubuntu 14.04
ruby 2.0.0 and ruby 1.9.1 with I believe all of the binaries (ruby, irb, 
gem, etc) pointing at 2.0. no rvm or rbenv

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