File too large

Error: File too large
        (&primitive-i/o-error (status . 27) (operation . #{Procedure  
2490 (call-with-input-file in channel-ports)}) (arguments "/work/gene/ 
xml/Danio_rerio.xml"))
make: *** [/work/gene/ttl/Danio_rerio.ttl] Error 1

[jar <at> ashby trunk]$ ls -l /work/gene/xml/Danio_rerio.xml
-rw-rw-r--  1 jar nc 2576696915 May  3 18:49 /work/gene/xml/ 
Danio_rerio.xml
[jar <at> ashby trunk]$

Why should scheme48 care how big the file is?
If I switch to the 64-bit version will this start working?

Thanks
Jonathan