It sounds like another application is set as the default one to open MC links. To fix this, go to your settings, then hit Manage Applications, then click on All at the top. Then scroll down and find the Mortgage Coach App and click on it. Then scroll down a bit to the part where it says Launch by default, and clear all of the defaults. The next time you click an MC link, you will be asked what program to use. Choose the MC app and check the box to set it as default and it will open via click from there on out.