Your link tag is wrong. 

Try to replace this line:

<rel="stylesheet" type="text/css" link href="style.css">

with this:

<link rel="stylesheet"  type="text/css" href="style.css">

Also try to run your HTML file through a HTML validator like this: http://validator.w3.org/#validate_by_input. There seem to be some other syntax issues with it.

For example, it should be:

<meta charset="utf-8">

Also, you have a second html tag inside the head section...

This is a problem with Find & Replace on OS X Mavericks. It will be fixed in the next update.

Hello, 

can you please have a look at the "Console" app? Do you see an error message there when this happens? Is there a crash report?

This will be fixed in the next update.

Mavericks changed the behavior of the save panel which caused this issue.

It will be fixed in the next update.

This will be fixed in the next update.

Selecting the "Macintosh HD" from the "Where" dropdown menu in the save panel, then tapping on the "down arrow" button and the selecting the documents folder works for me. (in case you need a workaround)

I'm seeing the same problem on my Mavericks machine. It seems to generate a wrong path and it looks to me like a bug in Mac OS X, but I'll have to investigate further.

Thanks for reporting this!

I don't know much about Fortran, but every online source I see when I search for "fortran comments" says that only an exclamation mark "!" starts a comment line.

I could find a reference to the asterisk comments in the wikipedia article on Fortran: http://en.wikipedia.org/wiki/Fortran#Obsolescence_and_deletions - it's the last line in the table on obsolete features in Fortran 90. 

I assume that the since the syntax definition is called "Fortran - Modern" that it doesn't support legacy features like fixed from source code.