eM Client hangs when clicking on an email with an attachment

When I click on an email with an attachment, however small, eM Client is hanging for between 10 seconds to a minute depending upon the size of the attachment.

I am using version 5.0.17595.0 connected to GMail via IMAP.

Many thanks

Hello,
when it happens again, run this application www.emclient.com/tools/emstackdump,exe and send me the log which it creates directly at wilson@emclient.com Thank you.