I have a problem changing from 'Class::Accessor::Fast' to 'Class::Accessor::Faster'. From what I understood, simply changing from Fast to Faster should have required no code modification; however, when a script invokes and tries to use this module I receive the error:

There must be some other differences otherwise there would be no point in having both Class::Accessor::Fast and Class::Accessor::Faster.
If they were identical apart from speed, then Marty Pauley (the author of both modules) would have just sped up Class::Accessor::Fast, and would not have created Class::Accessor::Faster.

Their documentation has these brief summaries, with more details in their descriptions. I'd check there :)

• "Class::Accessor::Fast - Faster, but less expandable, accessors"
• "Class::Accessor::Faster - Even faster, but less expandable, accessors"