Problem with File Manager...

[The Game]

When I try to edit one of my files, it shows up as a blank box, and there's no 'Submit' button, but when I go to that URL, it's the same as usual. =/ What could be the problem?

EDIT: Nevermind, I fixed it by trying to edit a file in a different folder. O_o But what could've caused the problem in the first place? Just a minor misfunction?

EDIT 2: Now it's still doing it. :( I just realized that it's only a few certain HTML files I can't edit. =/

[BihiraJonathan]

If you can, try deleting those html files, and reuploading them to see if that solves it.

[Cojawfee]

Are they read only? Check the permissions.

[EBCubs03]

Use Filezilla or another FTP program and manually edit HTML files. I prefer it way more.