To address this issue, I would like you to run the full setup file for IncrediMail and see if that solves the problem.
Please run the following executable to install the latest build of IncrediMail 2.5:http://www5l.incredimail.com/im/imsetup
When complete, please restart your computer.
If the problem continues, I would like you to open a new identity and see if you still encounter the same problem.
To create a new identity, please click on Tools > Identities > New Identity.
Set up your identity, and check to see if problem continues to occur in the new identity.
Please note that I would like you to configure the same email address in your new identity, there is no need to create a new email address. While the identity name should be different, the email address should be exactly the same.
As everything is being done in the new identity, none of the data and settings in your original identity should be affected.
To switch back to your original identity, simply click on Tools > Switch Identity, select the appropriate identity, and click on OK.
Please let me know the results.