c# Attempted to read or write protected memory arcgis

[isaacmorim]

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האם התכוונת ל: אני משדרג ADDONS מ 10.2 ל 10.4.1 עם VS2015

I'm upgrading ADDINS from 10.2 to 10.4.1 with VS2015

while ((pF = qFCU.NextFeature()) != null)

After about 100 cycles This message appears : "Attempted to read or write protected memory"

Can any body  help me?

thanks