We've recently got a problem with our import, here are some examples:

 

Source row 11 produced Excel error row 2: Error 5.6: Exception of type 'System.OutOfMemoryException' was thrown.

Source row 15 produced Excel error row 3: Error 5.6: Exception of type 'System.OutOfMemoryException' was thrown.

Source row 16 produced Excel error row 4: Error 5.6: Exception of type 'System.OutOfMemoryException' was thrown.

 

Sometimes it even caused RE to be frozen or stopped.

Have try to change duplicate search criteria but it haven't helped. Do you have any suggestions? 

Thanks,

Lena