PIC16f877A first 8 bytes destroyed after closing PicKit2 programmer app....

[LakisFM1]

First, thanks for the interest and quick reply.

Yes i already lost 1 day in the past , have done this error pressing ICD compile while not seeing it closely
This also affects only the operation of the program , not the hex-data itself.

But unfortunately this is not the case i do press simple compile.

Tried also other 877A, also recompiled and tried in 874A and LF877A , still have the same problem in all...
the only though i have is to try an old PICKIT2 programmer software version , but i have to downgrade firmware too .

ps....
Found a strange solution...I program the PIC , i remove PIC from the socket , Close App , then Re-open App , Insert PIC in socket , Read PIC and data is now OK.
Seems that something destroys the 8 bytes while closing or opening the PICKIT2 programer software..

ps2... leaving PIC in while closing is OK..
leaving PIC while OPENING the app the first 8 bytes are FF!...
To check if this is a bug of read , opening again the app and inserting pic afterwards then i see clearly the data are really destroyed ...