This is the strangest thing.

Only on one of my K2 sites (J1.5.25 + K2 2.5.4), when I do front end editing, on the Attachments tab the Browse button is missing.

I've tried re-installing K2 2.5.4. I've created a test category with all default settings and default template. Still the problem persists.

The HTML code has pertinent information stripped out between the <input> tags, but only on the Attachments tab. See attachment

All other tabs work correctly. What could possibly be interfering with this?

Thank you in advance for your help!

This is just strange behavior. Everything else the same all i can think of it the template. If they are different, try switching just to see (the template should not do this)

Weird, huh?

As I stated, I created a test category with all default parameters, so it's using the default template. I do have a a k2 override folder in my Joomla template folder, but I replaced all the stock files with a fresh copy from the com_k2 template folder, so it can't be pulling from anything that's been modified.