Support » Plugin: W3 Total Cache » [Plugin: W3 Total Cache] W3TC Minify Error Too many or duplicate files specified:

  • I can’t seem to figure out the reason for this error or how to get around it.
    There definitely aren’t any duplicate files, so I’m guessing it has to do with the Too many part of the error message.
    It is trying to combine 15 javascript files, which doesn’t seem to me like that many considering those added by plugins in addition to the theme’s JS.

    I didn’t find any help via Google on this error, so I hope perhaps you can help with this.


Viewing 10 replies - 1 through 10 (of 10 total)
  • Clay


    I am also stuck on this one. I don’t see any duplicate files, but maybe there is a problem with too many files? How many is too many?

    Just been fighting the same problem,the config for it is in
    and its limited to 10 files
    ‘allowDirs’ => ‘//’
    ,’groupsOnly’ => false
    ,’groups’ => array()
    ,’maxFiles’ => 10
    just change maxFiles to be 25 or whatever and that gets it running. Not sure if it impacts anything else though. Hope that helps you.



    Thanks for that one, shimirel. Hate to have to modify core plugin files, but at least that answers the question of how many files are allowed for minification.

    Having the same issue.

    Is modifying the core giles the only way to increase max files? Really don’t want to do that.


    Plugin Author Frederick Townes


    This is fixed in the development version now available on

    Hi. Same problem. Debug says too many or duplicate, but there are clearly no duplicate.

    I tried the fix by changing maxFiles to 25 and still the same problem.

    Any recommendations?

    I have the most recent release version and I am still getting this error, so I am guessing that this has not made it to the release yet.
    Any estimate on when we will see it?

    I also received this error with the latest version.

    Also, I don’t know if this applies, but see my post about automatic minifying errors:
    (btw, I meant to say *Important* parsing error found with automatic minify)
    In the minifying process, incorrect .js code was generated. You’ll see what I mean in my post. Good luck!

    I know there are a few post about errors. I just want to know if the minify errors is something I should fix or live with it. I understand that those errors notify me that could not minify a css or a js right? that’s question is, does it have any impact to my website when that happen? or just didn’t minify it?

    Specific error I see because I use an external supplier for my travel store is this one…not sure how to eliminate it. By the way, i use the automatic minify feature (not the manual one). it seems to work much better than when I tried to put them manual, most of them would break down

    thriftytraveling/wp-content/uploads/store/assets/store.css” doesn’t exist

    Any help is appreciated. I don’t know much about all this but I can see how this plugin is making my website much much faster, so I want to keep it but I also want to make sure these errors are not impacting the visitor experience.

    Plugin Author Frederick Townes


    @thriftytraveling did you have this issue with the latest version? You should specify full URLs to your files in the manual minify settings.

Viewing 10 replies - 1 through 10 (of 10 total)
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