That's a classic symptom of making an error in the PHP syntax when customizing the file. I've done that. It usually happens to me when I insert a single-quote incorrectly.
Can you post here exactly what you changed, both "from" and "to", including what line number it was on?
What editor did you use?
What FTP program are you using?
What operating system is your server using? (linux vs windows)
Okay, well, I didn't actually customize anything. Here's the deal. I bought a ZC template. I put it in the includes/template/ folder on my server. I went to the admin area in my shop and went to tools/template selection as I did before in my other shop. I went to select my new template and the drop down menu only shows the new template. It doesn't even show the 'classic' template choice it used to show. So, I selected the new template and clicked update. I then look at my shop and it wont show up. Just a blank white page.
The change to the meta-tag page was on the installation before this one. Afo suggested I stop using Fantastico to add ZC so that's what I did. The first installation was using Fantastico but it didn't load 1.3.8a, it loaded 1.3.7.1. I upgraded and even though there seemed to be some unexplainable weirdness in that upgrade, it seemed like it worked. I then wanted to change this line that appeared in my browser:
"Zen Cart, The Art of E-Commerce"
So I followed the instructions according the info found in the FAQ. It said to change the "// page title define" and the "// Site Tagline define" as well in the "meta_tags.php" file. So I did that. This file is found here:
includes/languages/english/meta_tags.php
According to the override system, I am supposed to place the edited php file here:
includes/languages/english/CUSTOM/meta_tags.php
As soon as I did this, my site disappeared. And again, this was on my first upgrade attempt. Needless to say I got frustrated and decided to take Afo's advice and try to do the whole installation myself. So I deleted the upgraded version of my Fantastico installation. I created a new database and uploaded the ZC 1.3.8a folder. I followed the installation instructions in the FAQ section, renamed the configure.php files and ran the install function.
All seemed to go well until the very end when I had to change back the permissions for these two files to read only. One worked no problem, but the other didn't seem to take. After I logged in to the new Admin area, I kept getting the warning message that the file needed to be set back to read-only even though I had already done it. It took 7 attempts before it took and the warning vanished.
So, now I think all is well, right? I go to the template selection area and NOTHING IS LISTED THERE. I didn't even upload the custom template yet. It doesn't even show the default templates. I take a chance and upload the custom template, find it in the selection area, select it, hit upgrade, and the site vanishes again. I am so frustrated right now. The custom template worked before and now it doesn't with the new version of ZC.
I am at a loss and am ready to scrap the whole thing. My other shop is just fine but I haven't upgrade it to 1.3.8a and as of right now, I am not going to. It is currently running 1.3.7.1.
I believe my server runs Linux
I use Fillzilla
I use Notepad (which is what I used for my other shop with absolutely no problems)
Should I just removed it all one more time and start over?!?!?