Hi,
Sounds like you've missed out uploading the collect_info/update_product files in the modified core files/admin/includes folder. Carefully upload the files again, according to the installation instructions.
You can set up URIs for them by using software such as PHPMyAdmin to add the appropriate records. There is more information about this in the configuration documentation (look for the bit about "other" zen cart pages).
Hope that helps!
All the best...
Conor
ceon
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