How to? Use SafeChars plugin...

I apologize in advance if this is a stupid question, but I am blocked and unable to proceed any further until I know what I am doing wrong. I have the 64-bit safechars plugin in the plugin directory:
[C:\Program Files\JPSoft\TCMD17x64\Plugins]dir /a-d
Volume in drive C is Everything Serial number is 420a:1d5b
Directory of C:\Program Files\JPSoft\TCMD17x64\Plugins\*
9/27/2010 18:42 9,259 4console.txt
3/26/2012 18:55 84,992 4console64.dll
7/22/2014 15:35 44,032 EVENT64.dll
10/31/2014 11:52 41,984 safechars-x64.dll
10/31/2014 11:56 33,648 SafeChars.chm
213,915 bytes in 5 files and 0 dirs 225,280 bytes allocated
651,259,097,088 bytes free​
As can be seen from above; I am using a 64-bit version of Take Command/TCC as can be seen below:
TCC 17.00.57 x64 Windows 7 [Version 6.1.7601]​
Yet I get the following error messages:
TCC: (Sys) Z:\BuildUniqueSongList.btm [3] Incorrect function.
Formatting Fields...
TCC: Z:\BuildUniqueSongList.btm [114] Unknown command "SafeEcho"
TCC: Z:\BuildUniqueSongList.btm [114] Unknown command "SafeEcho"
Sorting output...
C:\Users\DanTheMan\AppData\Local\Temp\SortedSongList.txtThe process cannot access the file because it is being used by another process.
Eliminating duplicates...
TCC: (Sys) Z:\BuildUniqueSongList.btm [39] Incorrect function.
Again I apologize in advance but I am no longer able to figure what I am doing wrong myself.
At the beginning of my .BTM files, I always check to make sure that the plugin is indeed loaded, before I call any of the commands/functions/variables that are contained within that plugin. For example;
if plugin safechars echo Plugin Is Loaded
if not Plugin safechars Plugin Is Not Loaded
This may not solve your problem, but it is a first step.