>I can NOT copy this, Fabio, everything works as expected. Have you marked "Make backup" in Tools-options-IDE? I have.

Of course ! Otherwise, who creates the .bak ?

>
>>VFP 9 can write large prg files.
>>Now, because, at the same time, i cannot open two or more program.prg edit windows,
>>i try this:
>>open the program.bak in read mode, and edit program.prg.
>>One ugly surprise:
>>when i save (only save!!!) VFP says to me:
>>- File access is denied (Error 1705)
>>and
>>- close the edit window, losing all my modifications !!
>>
>>To use VFP within a Dev Team ?
>>Example:
>>

>>- Dev1 open a .prg
>>- Dev2 cannot open .prg
>>-   then Dev2 open the .bak
>>- Dev1 works for 2 hours
>>- Dev1 a coffee wants drink,
>>   then it press Save
>>- Dev1 the coffee does not drink more,
>>   but one is drunk camomile!
>>

>>
>>An optimal way in order to pass the days!
>>
>>Ask: why VFP open a prg in pessimistic lock mode ?
>>Expected:
>>

>>- Open a .prg
>>- At first edit operation:
>>a) refresh the file with a write lock access
>>
>>b) when save, if a error occurs, NOT CLOSE THE MODIFY WINDOW !!!!!!!!!
>>

>>
>>Another point:
>>the situation is still worse than how much it seems.
>>If you uses:
>>

>>MODIFY COMMAND SOMEPROGRAM.BAK NOEDIT && Read only mode
>>

>>VFP open SOMEPROGRAM.BAK with a write exclusive access !,
>>and you still must to drink camomile.
>>
>>Fabio