Make a backup copy of your files. It is important you do this on a regular basis. Follow the steps on this web page: Backing Up & Restoring Files for the MasterCook Windows Products.
Locate your disk or download you previously purchased, so you can use it to reinstall the program on your computer. If you purchased the download, the installation file will be inside the Downloads folder on your computer unless you deleted it. All web browsers save download files to that Downloads folder. If you have misplaced your disk or download, you can get a replacement here: MasterCook 14 Download
Go to the Windows Settings Add/Remove Programs screen on your computer and scroll down to MasterCook 14 and select Uninstall and follow the prompts to uninstall MasterCook 14 from your computer.
Delete the folders that remain behind. If you skip this step, your corrupt installation problems will remain, so do not skip this step.
Confirm that the three MasterCook 14 folders are removed from these locations:
C:\Users\Public\Documents -- (Open the C drive. Open the Users folder. Open the Public folder. Open the Public Documents folder. Delete the MasterCook 14 folder that is inside of the Public Documents folder.)
C:\Program Files (x86) -- (Open the C drive. Open the Program Files (x86) folder. Delete the MasterCook 14 folder that is inside of this folder.)
C:\ProgramData -- (Open the C drive. Open the ProgramData folder. Delete the MasterCook 14 folder that is inside of this folder.)
(If you do not find the ProgramData folder inside the C drive that means Windows is hiding it from you. You need to tell it to show you hidden files and folders on the computer.)
It is very important the three folders are deleted after uninstalling, otherwise corrupt files will remain and so will your problems after reinstalling.
Restart your computer. Close all programs on the computer and disable your antivirus program (You might want to disconnect from the internet first), so nothing can interfere and corrupt the installation.
After installing MasterCook 14 on your computer go to the Home screen in MasterCook 14 (not the website). Click on the Updates link on that screen. It will load a web page and let you know if your program is up to date. Install any update that is recommended on this web page.
After the program is installed and updated you can restore your backed up files as mentioned near the end of this web page: Backing Up Recipes and Other Files.