Hello,

We found that custom system messages had a conflict error when submitting an activation key that would cause a php error:

‘A PHP Error was encountered
Severity: Notice
Message: Undefined property: EE:TMPL
Filename: system_messages/ext.system_messages.php
Line Number: 215
3:07 PM
Fatal error: Call to a member function run_template_engine() on a non-object in /home/ecprp/public_html/coeengine/expressionengine/third_party/system_messages/ext.system_messages.php on line 215’

The root of the problem seemed to be that even though the ‘EE_Template’ class existed the $this->EE->TMPL was still null. So the referenced function on line 215 did not work.

I found that for us catching the specific Action Id (64) on line 112 of ext.system_messages.php fixed our problem. I’m not sure it’s a good solution… but it worked for us. 😊

I was on the fence about how to flag this. In the end I marked it as trivial since we were able to hack in a fix, but this could be a major problem for other people who are using Custom System Messages and User.

It almost caused us to completely disable the Custom System Messages module since we need User more.