WowAce

What steps will reproduce the problem?
1. This error is displayed on every login

What is the expected output? What do you see instead?
N/A

What version of the product are you using?
0.1-rc5

Do you have an error log of what happened?
Yes.

Please provide any additional information below.
Interface\AddOns\Socialist\Socialist.lua:122:
attempt to call method
'RegisterWhoLibEvent' (a nil value)

I thought maybe the addon required the WhoLib library, but I still get this error after adding the WhoLib addon.

This may or may not be related, but after this error message I periodically get the following error on line 354:
attempt to index field 'callbacks' (a nil value)

Thank you for the report. I've just returned from an extended absence from WoW, and will be doing a complete rewrite of Socialist for version 0.2 using lessons learned from the previous version. This should be fixed in that build.