Problem importing directory/folder structure & emails from MS Outlook 2007

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After starting the import process in Em client from MS OL 2007 it starts to work, but then after a while around 7,000 emails in a messae pops up saying "An exception happened when trying to import data"

Upon further investigation it apears it has only imported 2 of many folders that i have in the main inbox. Digging a little deaper it looks like non of the emails from the missing folders have been imported also.

Outlook 2007 is set as my default

I have also tried the import selected folders option but the same problem happens

i am using em 3.5.11809.0

Please help