WowAce

It looks like ace3 is using a 4.1 routine on 4.0 live, which is breaking tons of addons. We have another ticket about this, but the subject doesn't make it clear what a big deal this is, so I believe nobody has read it yet. The error is as follows.

Message: ...Libs\AceGUI-3.0\widgets\AceGUIContainer-TabGroup.lua:271: attempt to call method 'GetStringWidth' (a nil value)
Time: 03/31/11 08:29:35
Count: 1
Stack: (tail call): ?
...Libs\AceGUI-3.0\widgets\AceGUIContainer-TabGroup.lua:271: in function `BuildTabs'
...Libs\AceGUI-3.0\widgets\AceGUIContainer-TabGroup.lua:173: in function `SetTabs'
...ceConfig\AceConfigDialog-3.0\AceConfigDialog-3.0.lua:1611: in function `FeedGroup'
...ceConfig\AceConfigDialog-3.0\AceConfigDialog-3.0.lua:1853: in function `Open'
...ceConfig\AceConfigDialog-3.0\AceConfigDialog-3.0.lua:830: in function <...ceConfig\AceConfigDialog-3.0\AceConfigDialog-3.0.lua:613>
(tail call): ?
[C]: ?
[string "safecall Dispatcher[4]"]:9: in function <[string "safecall Dispatcher[4]"]:5>
(tail call): ?
...ns\ArkInventory\Externals\Ace3-AceGUI\AceGUI-3.0.lua:314: in function `Fire'
...xternals\Ace3-AceGUI\widgets\AceGUIWidget-Button.lua:22: in function <...xternals\Ace3-AceGUI\widgets\AceGUIWidget-Button.lua:19>

Locals: <none>

This error is occurring when I click the import option. It started right after updating Ackis Recipe List from v.2.2.2 to v.2.2.3. Reverting Ackis Recipe List back to v.2.2.2 "fixes" the issue. I posted a comment at Ackis Recipe List, and will now update it to reference this ticket.

I had the same error but disabling Skillet fixed the problem (thanks fixitman for pointing out Ackis). Seems a few people are getting this error as seen on Curse.com comments.

I fixed this by copying using the AceGUI libs from GM2 to replace the newer one in ARL. ARL still works, and the 4.1 code is gone. The real problem is with ACE3, and any addons that use the newer version.