What steps will reproduce the problem?
- addon is installed
- using chat command "guildpanel show"

What is the expected output? What do you see instead?
nothing

What version of the product are you using?
0.7.0 (playing on german client)

Do you have an error log of what happened?
[2009/03/01 12:47:09-1180-x2]: GuildPanel\DataView.lua:885 attempt to concatenate a nil value
GuildPanel\DataView.lua:417 in function `DrawDataView'
GuildPanel\Core.lua:748 in function <Interface\AddOns\GuildPanel\Core.lua:693
(tail call): ?:
AceConfigCmd-3.0-7:123: in function <...\AceConfig-3.0\AceConfigCmd-3.0\AceConfigCmd-3.0.lua:113
AceConfigCmd-3.0-7:377: in function <...\AceConfig-3.0\AceConfigCmd-3.0\AceConfigCmd-3.0.lua:303
(tail call): ?:
AceConfigCmd-3.0-7:700: in function `HandleCommand'
AceConfigCmd-3.0-7:719: in function `?'
Interface\FrameXML\ChatFrame.lua:3210 in function <Interface\FrameXML\ChatFrame.lua:3163
<in C code>: in function `ChatEdit_ParseText'
Interface\FrameXML\ChatFrame.lua:2930 in function <Interface\FrameXML\ChatFrame.lua:2929
<in C code>: in function `ChatEdit_SendText'
Interface\FrameXML\ChatFrame.lua:2951 in function <Interface\FrameXML\ChatFrame.lua:2950
<in C code>: in function `ChatEdit_OnEnterPressed'
<string>:"*:OnEnterPressed":1: in function <[string "*:OnEnterPressed"]:1>

Please provide any additional information below.
the panel is opened and not data is shown.