I read the FAQ and the ReadMe regarding not FINDING a line in a file and understand I need to correct that (my installation has mods), however I can't see where it tells me if any changes have been made to the production files. I'm guessing the files are copied into that mod's folder then the changes are made to the real files after encountering no critical errors?
The ReadMe is great! Maybe adding a little about how to handle the errors would be a good idea? EM gives some (likely unintentional) conflicting information in the report (below). I guess I'll delete the mod and do the changes by hand. Sigh.

Thanks - love EasyMOD!
EDIT: The problem I was having was me being ignorant (or likely just stupid) about mods - I didn't think mod changes would interfere with phpbb vanilla. Instead, I thought they would enhance (add to) it. I found the offending name and changed it in the update script and it worked great.
My installation:
Template(s) used: Subsilver
Language(s): English
MODS INSTALLED
Anti Bot Question 1.0.3 8/28/2006
http://www.phpbb.com/phpBB/viewtopic.php?t=383305
BBCode Strikethrough 1.3.0 7/27/2006
http://www.phpbb.com/phpBB/viewtopic.php?t=220027
Multiple BBCode 1.4.0 7/27/2006
http://www.phpbb.com/phpBB/viewtopic.php?t=145513
Attachment Mod 3/14/2006
http://www.phpbb.com/phpBB/viewtopic.php?t=74505
Forum Notification 1.5.0 3/6/2006
http://www.phpbb.de/viewtopic.php?p=630986#630986
EasyMod v0.3.0 9/2005, updated 3/06 & 8/07
viewforum.php?f=15
Active Members Only 1.1.1 9/2005
http://www.phpbb.com/phpBB/viewtopic.php?t=227860
Log IP on Registration 9/2005
http://www.phpbb.com/phpBB/viewtopic.php?t=281477
EasyMOD processing report:
EasyMOD - Automatic MOD Installer
beta (0.3.0)
Installation Failed
EasyMOD encountered the following error(s). A general error could be ABC. A critical error means D and you should do XYZ.
Error Detail
Critical Error
FIND FAILED: In file [templates/subSilver/posting_body.tpl] could not find:
</select> {L_FONT_SIZE}:<select name="addbbcode20" onChange="bbfontstyle('[size=' + this.form.addbbcode20.options[this.form.addbbcode20.selectedIndex].value + ']', '[/size]')" onMouseOver="helpline('f')">
MOD script line #591 :: FAQ :: Report
MOD Data
MOD Title: phpBB 2.0.21 to phpBB 2.0.22 Code Changes 1.0.0 phpbb-2.0.21_to_2.0.22.txt
Author: Acyd Burn N/A Meik Sievertsen N/A
Processed Themes: subSilver
Processed Languages: english
Files Edited: 13
Commands Processed: 82
Unprocessed Commands: 0
The following commands were not recognized by EasyMOD and were ignored. The MOD script line number is displayed.
Unprocessed Commands
EasyMOD successfully processed the following commands:
Commands Processed
OPEN #80
admin/admin_board.php
FIND #85
(truncated)
OPEN #586
templates/subSilver/posting_body.tpl