[Koha] marc subfield editing error message

[Karen and Vincent Henry]

We have just installed koha 2.2.4 in our library on the windows platforms, but are unable however to edit the subfields in the marc subfield structure admin page. We keep getting an error message when we click the edit link -

Premature end of script headers: marc_subfields_structure.pl 
If you think this is a server error, please contact the webmaster. 

Error 500
intranet
10/28/06 11:16:30
Apache/2.0.58 (Win32) 

Does anybody have any answers to this problem?  Thank-you.
Karen Robertson Henry
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