>As stated before in this thread, this is NOT a bug. From help on Alter table:
>
>ALTER TABLE might not produce consistent results when used with Visual FoxPro cursors created by the CREATE CURSOR command. In particular, you can create a Visual FoxPro cursor with features, such as long field names, that are normally available only with tables...>

Pretext explanation. If long field name doesn't supported for cursors VFP should give an error "You cannot use long field names with cursors". That would be clearly.

VFP behaviour strange with this issue. gives different unrelative erros with different conditions...

It's a bug for me.