OK - specifically:
I can read it with Open/Readline;
I can read/write it with ReadProfileString / WriteProfileString;

I CAN NOT do:
Code:

$String = ReadProfileString('BigFile.ini', '', '')

to enumerate all of the headers in the ini file. There are 6600 headers, each about 10-15 characters. If you average them at 13 chars, plus the newline, that's 96K string size. Since I can read/write the file in Kix using different methods, there's no issue with file size - either the enumeration in kix failed, or - more likely - the string size limit has been exceeded.

Glenn