possible installation problem

Hi, I just installed SuiteCRM-7.8.2, the installation went smoothly but now when I open an Account, i get the following notice:

Undefined index: LBL_UPDATE_TEXT in /REDACTED/modules/AOP_Case_Updates/Case_Updates.php on line 351

The warning is innocent enough, but I worry that something has gone wrong with the installation, something that may cause more serious issues later. Does anyone have an idea how to troubleshoot this issue?

I was havign problems with php 5.6 and downgrading to php 5.4 then it is all right to me. Which php version are you using?