Lua runtime error: attempt to call a strong value
And it doesn't tell you where it is, after you've finished coding 300 lines of lua script.
What I have to do to track down this error is comment out huge swaths of code till the addon loads correctly. Then I half the code I comment out, try to load again, etc, until I find the offending line. And it's usually something really stupid that you didn't notice.
Arcon! Can we get a handle on these kinds of errors? They're driving me batty!
By the way, if this was a post on the official forums I would be banned for including Arcon's name and the word batty in the same paragraph, citing some esoteric TOS rule, and not for mentioning the obvious use of Windower. lol