Cannot set Shipping Methods configuration in admin

[opepin]

When trying to setup shipping methods, the backend admin tool fails.

Caused by typo between CarrierAbstract and AbstractCarrier in system.xml
opepin@91e380e

[elenleonova]

Hi opepin,
Thanks for reporting this issue.
It was already addressed in the system. Please, check our latest 2.0.0.0-dev54 version on the GitHub.