Indeed the "English" Crack Versions are ONLY for an US installation. European and US Versions are different - you canīt mix them up.
Normally an "English" Version should be an "European" version, but the available GCW English cracks are indeed US modifications.
The EA update server at
ftp://ftp.ea.com/pub/ea/patches/ shows 2 update folders - "eng/ us" for the US Version and "eng/ uk" for the European release.
Hope this helps,
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