First of all Try to uninstall incredimail and install it again
If that does not fix the problem then back up all your Incredimail data and remove Incredimail from registry and uninstall it from control panel
Note:Be careful while removing registry of incredimail (incorrect steps may harm your computer)
You can back up your data from incredimail data and settings transfer wizard in the file menu at the top or
you can find the incredimail message store folder and Addresses in the c: drive
After you removed incredimail registry ,install incredimail again and see if its works
You can restore your data from incredimail data and settings transfer wizard or you can restore your Addresses and messages from incredimail import message and import contacts option
Hope this will fix your problem if not then please contact us for support on incredimail@gmail.com
If that does not fix the problem then back up all your Incredimail data and remove Incredimail from registry and uninstall it from control panel
Note:Be careful while removing registry of incredimail (incorrect steps may harm your computer)
You can back up your data from incredimail data and settings transfer wizard in the file menu at the top or
you can find the incredimail message store folder and Addresses in the c: drive
After you removed incredimail registry ,install incredimail again and see if its works
You can restore your data from incredimail data and settings transfer wizard or you can restore your Addresses and messages from incredimail import message and import contacts option
Hope this will fix your problem if not then please contact us for support on incredimail@gmail.com