To avoid index corruption on win 7 on Intel Core I 7: I had to do the following:
Avoid the use of indexes that use functions:
I use text fields containing information for management.
if I need to sort by Date-Time + Number of client I use an extra field previously converted string type:

MiField = ALLTRIM (TTOC (MiFechaHora, 1)) + ALLTRIM (str (NumberOfCustomer))

I avoid using indexes using date field, but instead created an extra field of type characterss and store the value of the date conversion (DTOC (Date))


I run my executable file in admin mode and compatibility mode Win XP SP3, to avoid conflicts with Virtual Store and the Roamming of Win 7.



regards