Errors including file

Hi,

i work on Win98, apache 1.3.24/PHP4.2.1.
I include a PHP file (867 lines) witch contains functions :

include("include/fonctions.php");

This previous code is inserted in the upper frame and the left frame.
But sometimes, i've got errors like :

Parse error: parse error, unexpected '.' in d:\www\include\fonctions.php on
line 431

and

Parse error: parse error, unexpected T_ENCAPSED_AND_WHITESPACE in
d:\www\include\fonctions.php on line 275

Error line can be 206,325,186...

I refresh the page (F5) and all is right.
It is sure that this included script contains no errors.