Updating Mod for 150 - Little Problem

[ScriptJunkie]

A question about learning to interpret error messages:

How can I tell that the error message below is telling me that I'm missing a define? Is there something specific in there that points me in that direction, or does it just come with time and learning?

[31-Mar-2012 22:09:27]
PHP Warning:  include(includes/modules/FILENAME_RECENT_PRODUCTS_MODULE.php) [<a 
href='function.include'>function.include</a>]: failed to open stream: No such file or directory in 
/***/***/public_html/***/includes/templates/atestcustom/templates/tpl_modules_recent_products.php 
on line 12

[31-Mar-2012 22:09:27] 
PHP Warning:  include() [<a href='function.include'>function.include</a>]: Failed opening 
'includes/modules/FILENAME_RECENT_PRODUCTS_MODULE.php' for inclusion 
(include_path='.:/usr/lib/php:/usr/local/lib/php') in 
/***/***/public_html/***/includes/templates/atestcustom/templates/tpl_modules_recent_products.php on line 12

Note that I've already made the following changes, yet the error remains the same:


Changed includes/modules/FILENAME_RECENT_PRODUCTS_MODULE.php

to

includes/modules/FILENAME_RECENT_PRODUCTS.php

and

Changed line 12 of /includes/templates/atestcustom/templates/tpl_modules_recent_products.php from

include(DIR_WS_MODULES . zen_get_module_directory(FILENAME_RECENT_PRODUCTS_MODULE)); 

to

include(DIR_WS_MODULES . zen_get_module_directory(FILENAME_RECENT_PRODUCTS));