problem opening relative path files while the "Add Plugin" dialog is open

Here's an interesting scenario...

I just recently added the ability to log chats to a file in my channel capture plugin, and I noticed something weird that happened today. If a chat comes through, and the plugin subsequently tries to log the chat to a file, while I have the Add Plugin dialog open, the file open operation fails if you use GetInfo(58) (the logs directory path) if it is defined as a relative path.

Here's the error:

Run-time error
Plugin: Aardwolf_Chat_Capture_Miniwindow (called from world: Aardwolf)
Function/Sub: OnPluginBroadcast called by Plugin Aardwolf_Chat_Capture_Miniwindow
Reason: Executing plugin Aardwolf_Chat_Capture_Miniwindow sub OnPluginBroadcast
[string "Plugin"]:490: .\logs\AardwolfChatLog.txt: No such file or directory
stack traceback:
        [C]: in function 'assert'
        [string "Plugin"]:490: in function 'stampAndStore'
        [string "Plugin"]:556: in function <[string "Plugin"]:546>
Error context in script:
 486 :     if (log_to_file == 1) then
 487 :         if (log_colour_codes == 0) then
 488 :             log_text = strip_colours(log_text)
 489 :         end
 490*:         local f = assert(io.open (GetInfo(58)..GetInfo(2).."ChatLog.txt", "a+")) -- handle to chat log file
 491 :         f:write (log_text.."\n") -- write to it
 492 :         f:close ()  -- close that file now
 493 :     end
 494 :

I seem to have fixed it by replacing GetInfo(58) with
GetInfo(58):gsub("^\.\",GetInfo(56)) to construct an absolute path.