Blank "Untitled" pages where my categories should be

[breighco]

Hi everyone, idk if this is the correct place for this question and I apologize ahead of time if it is not, but i need to fix this.

When first visiting my site, the index page works fine, and you can get to some of my products using the "New for this month" links, but what you cannot do is get to the products using the "categories" links on the left side.

These worked a couple days ago, all I have done since then is make a custom page, for the directions on how to apply the product, and show the "more information" box on the left side. Try clicking on one of the categories such as "Shirts" or "Vinyl" and look at the page it brings you to. This has me stumped big time. It worked fine before, I add the custom page, and now it gives me those blank pages. Help me please someone!
http://www.americancustomgraphics.com/zencart

[Steven300]

Tutorial/FAQ on troubleshooting blank pages:
https://www.zen-cart.com/tutorials/index.php?article=82

(try step 2a)

[breighco]

Thanks steven, I tried this after you told me to, but the error messages that it gave me did not help me much.

It says: Cannot modify header information - headers already sent by: and then a filepath leading to my includes/languages/english.php file, and line 1401. This at first made me think this must be the problem, not being able to modify the header information could definitely lead to some blank pages but there is only one catch to that error.
This file only has 1400 lines total. It says the error is on line 1401.
The other two files it has problems with are files ive never modified or even opened while working on my site. Although when i went to the line in those files that it said was giving me problems, the line numbers both fell where there is no code, only comment blocks.

Once again, I am dumb-founded. I thank you a lot for that suggestion, but my problem still exists. Any other suggestions would be greatly appreciated.

[Steven300]

Sounds like you have an extra line at the end of your php file.

Related Tutorial/FAQ:
https://www.zen-cart.com/tutorials/index.php?article=87

[breighco]

Wow. Thank you so much! That fixed it! I don't see how dumb little things like that can make such massive differences on how your website works.
I would have never guessed anything like that myself, partly because of my lack of experience with both zen-cart and php, so I don't know how much I can thank you! You're great! lol
Thanks again...

[Steven300]

Glad to help

[PlayfulDays]

Hello. I am new to Zen Cart and I am SO lost. I recently changed my english.php file and now have blank pages on 1 of my products only. I followed the guidelines above and they are very helpful. Thank you very much. I deleted the blank lines and all is well again in Gift Certificate World. I am hoping this also fixes the blank pages in the shopping cart as well.