9ZAP Question

[BUDDYonRC at aol.com]

Something strange happened with my 9 ZAP that I cant explain and I am looking 
for possible answer.
At the field yesterday I was making some trim changes prior to flying. I 
turned the transmitter off and when I turned it back on the message "Initialize 
Ext Mem" YES No
came on.
The CamPac is not new and had several models stored in it. If I selected No 
the transmitter would not recognize the CamPac as being installed, If I removed 
the CamPac I would not get the message when the transmitter was turned on. I 
flew without the CamPac and when I was through flying I installed the CamPack 
and when I turned the transmitter on and got the message I selected YES and 
everything went back to normal except the CamPac was wiped clean and all model 
data reads UNUSED all model data stored in it was lost. Does anyone have a clew 
as to what caused this to happen?
Buddy Brammer   
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