On my Mac OS X 10.5.8, I changed the color background of the Xterm (X11) by adding the following lines to the file
xterm*Background: black xterm*Foreground: green xterm*cursorColor: LightBlue xterm*pointerShape: arrow xterm*pointerColor: blue
It was working well. I did not save other modifications to other files. I switched off the Mac.
The day after, the Xterm just does not open. I click on the icon X11. The bar on the top of the screen shows it is going to open but after a few seconds, it turns back to the previous program and does not open X11. Same result if I try to open it from
Applications/Utilities/X11.app it just does not open, but NO error messages or other issues to the other programs open.
I tried to check Finder, Go to Folder,
/private/etc/paths.d. It shows
/usr/X11/bin. This should be correct. So I do not know how to find the error.