rename 'themes' folder prestashop version 1.6

[garciasanchezdani]

I searched in internet but I have not found anything to enlighten me.   I'm looking for ways to rename the 'themes' folder, can you help?

 

I tried:

 

1. Rename directly the /themes directory through ftp, and everything breaks. Prestashop gives me an exception...where controllers don't find the theme...does not work.
2. In the file config/defines.inc.php, change the constant '_PS_ALL_THEMES_DIR_', assigning the value _PS_ROOT_DIR_.'/tema/'. After this, rename the /themes directory, giving the new value '/tema', but prestashop gives me the exception at same.

 

Thanks in advance.

Edited October 7, 2015 by garciasanchezdani (see edit history)

[NemoPS]

And why would you do that? There are far too many resources referring to "themes" as it's taken as the standard folder where things are cached and stored, it would be pointless and get removed at the next upgrade