I'm not sure why that is happening and I use Incredimail Premium.
You may have inadvertently refused permission for the programs.
Double-click the taskbar icon to open Security Center and then click Advanced Menu lower left. Then click Configure, then Internet & Network at upper left.
Click Advanced in the right module. Then Program Permissions on the left.
If either or both are appearing as blocked then alter them to "Full Access".
According to Incredimail help the permissions required are:
You can add any that are missing.
The above, by the way, is as per Incredimails Help section.
The only other thing I can suggest is to ensure that your Incredimail is the latest version by clicking "Help/About Incredimail XE" when Incredimail is open and select the Check for Updates button.