error every time I try to sebùnd anemail

Hi every time I try to send an emailI got the following error:

"it has been not possible to attache the file “/” due to the following error: accessto c:\ denied

what version of eM Client do you use?


the version is: 3.0.10206.0

There were some issues that were fixed in the newer internal versions and it should be working in next major release (3.5) which is in final beta-testing phase right now.