Don't give up yet, whatever you did when you 'checked' the templates again, you fixed the signature edit page! All I know is that the template looks mangled in the page source for newthread.php and possible others. For example, the editor code in the newthread page should look like this:
<!-- //EDITOR -->
<textarea style="visibility:hidden;position:absolute;top:-20;left:-20;width:1px;height:1px" name="message" id="message" rows="20" cols="70" tabindex="2">{$message}</textarea>
<style type="text/css">@import url(richedit/styles/office2007/style.css);</style>
<script language="JavaScript" type="text/javascript" src="richedit/editor.js?version=4.2"></script>
<script language="JavaScript" type="text/javascript">
var getdata =document.getElementById("message").value;
Instantiate("max","editor", getdata , "100%", "300px");
//For Vietnamese User. Edit file editor.js to enable vietnamese keyboard
if(enable_vietnamese_keyboard==1){
document.write("<script language=\"JavaScript\" type=\"text/javascript\" src=\"richedit/avim.js\"><\/script>");
var hoteditor_avim_method = hot_readCookie("hoteditor_avim_method");var him_auto_checked="";var him_telex_checked="";var him_vni_checked="";var him_viqr_checked="";var him_viqr2_checked="";var him_off_checked="";if(hoteditor_avim_method=="0"){him_auto_checked="checked";}else if(hoteditor_avim_method=="1"){him_telex_checked="checked";}else if(hoteditor_avim_method=="2"){him_vni_checked="checked";}else if(hoteditor_avim_method=="3"){him_viqr_checked="checked";}else if(hoteditor_avim_method=="4"){him_viqr2_checked="checked";}else if(hoteditor_avim_method=="-1"){him_off_checked="checked";}
document.write("<div style='width:100%;text-align:center;font-family:Verdana;font-size:11px;'><input "+him_auto_checked+" id=him_auto onclick=setMethod(0); type=radio name=viet_method> Auto :: <input "+him_telex_checked+" id=him_telex onclick=setMethod(1); type=radio name=viet_method> Telex :: <input "+him_vni_checked+" id=him_vni onclick=setMethod(2); type=radio name=viet_method> VNI :: <input "+him_viqr_checked+" id=him_viqr onclick=setMethod(3); type=radio name=viet_method> VIQR :: <input "+him_viqr2_checked+" id=him_viqr2 onclick=setMethod(4); type=radio name=viet_method> VIQR* :: <input "+him_off_checked+" id=him_off onclick=setMethod(-1); type=radio name=viet_method> Off<br><img src="+styles_folder_path+"/vietnamese_symbol.gif></div>");
}
function get_hoteditor_data(){
if (HTML_ON == "no"){
alert ("Please uncheck the HTML checkbox");
return false;
}
setCodeOutput();
var bbcode_output=document.getElementById("hoteditor_bbcode_ouput_editor").value;//Output to BBCode
//Make it work with MOD Hoteditor 4.0
bbcode_output=bbcode_output.replace(/\{EDITOR=/gi,"[B]{[/B]EDITOR=");
bbcode_output=bbcode_output.replace(/EDITOR\}/gi,"EDITOR[B]}[/B]");
document.getElementById("message").value = bbcode_output;
}
</script>
<!-- //EDITOR -->
Yours is incomplete:
<!-- //EDITOR -->
<textarea style="visibility:hidden;position:absolute;top:-20;left:-20;width:1px;height:1px" name="message" id="message" rows="20" cols="70" tabindex="2"></textarea>
<style type="text/css">@import url(richedit/styles/office2007/style.css);</style>
<script language="JavaScript" type="text/javascript" src="richedit/editor.js?version=4.2"></script>
<script language="JavaScript" type="text/javascript">
var getdata =document.getElementById("message").value;
Instantiate("max","editor", getdata , "100%", "300px");
//For Vietnamese User. Edit file editor.js to enable vietnamese keyboard
if(enable_vietnamese_keyboard==1){
document.write("<script language=\"JavaScript\" type=\"text/javascript\" src=\"richedit/avim.js\"><\/script>");
var hoteditor_avim_method = hot_readCookie("hoteditor_avim_method");var him_auto_checked="";var him_telex_checked="";var hi
<!-- end: newthread -->
I'd also suggest you make sure you have the latest code release of MyBB 1.4 (try re-downloading the zip file and re-upload all the files except for inc/settings.php and inc/config.php and make sure that all the files and directories are CHMOD'ed properly.