Uncaught SyntaxError: Unexpected token < ext-all-debug.js:4934
(anonymous function) ext-all-debug.js:4934
loadAjaxContent Utils.js:1105
renderPart WebPart.js:168
Ext.extend.handleResponse ext-all-debug.js:4643
handleTransactionResponse ext-base-debug.js:1888
checkResponse ext-base-debug.js:1936
(anonymous function)

In line 168 of WebPart.js

LABKEY.Utils.loadAjaxContent(response, targetElem, _success, _scope):

targetElem is an existing <div> in the DOM hard-coded in the HTML file and
response is an object with some attributes like
status: 200
statusText: OK
responseText:

<table class="labkey-output"><tr><td><pre>File already exists, no need to recreate it!
</pre></td></tr></table><br/>

which is what I'm after: my R code is

if ( true )
 txt <- "File already exists, no need to recreate it!";

write(txt, file="${txtout:textOutput}");

So what is the issue/problem here?

Is the Ext.util.JSON.decode() method not liking the <br/> piece at the end?
It was working before for me...

Recently I upgraded the server from 12.1 to 12.2

Thanks.
-Leo