LogBox Error?

Hi,

I seen this error pop up a few times but I'm not sure why. In this
case I'm making some ajax cold and trying to use the coldboxproxy.cfc
but I have seen it before.

Invalid list index 0.
In function ListDeleteAt(list, index [, delimiters]), the value of
index, 0, is not a valid as the first argument (this list has 0
elements). Valid indexes are in the range 1 through the number of
elements in the list.

The error occurred in C:\inetpub\wwwroot\coldbox\system\logging
\LogBox.cfc: line 195
Called from C:\inetpub\wwwroot\coldbox\system\logging\LogBox.cfc: line
154
Called from C:\inetpub\wwwroot\coldbox\system\plugins\Logger.cfc: line
33
Called from C:\inetpub\wwwroot\coldbox\system\web\services
\PluginService.cfc: line 98
Called from C:\inetpub\wwwroot\coldbox\system\web\services
\PluginService.cfc: line 137
Called from C:\inetpub\wwwroot\coldbox\system\web\Controller.cfc: line
350
Called from C:\inetpub\wwwroot\coldbox\system\web\services
\ExceptionService.cfc: line 40
Called from C:\inetpub\wwwroot\coldbox\system\remote\ColdboxProxy.cfc:
line 167
Called from C:\inetpub\wwwroot\coldbox\system\remote\ColdboxProxy.cfc:
line 85
Called from C:\inetpub\wwwroot\myapp\coldboxproxy.cfc: line 7

193 : <cfscript>
194 : // Get parent category name shortened by one.
195 : var parentCategory = listDeleteAt(arguments.category,
listLen(arguments.category,"."), ".");
196 :
197 : // Check if parent Category is empty

Any thoughts helpful.

Thanks!

Resolved, I didn't have an "appname" defined in my Coldbox.cfc