If you keep having a problem to install an application, make a checksum to verify the package integrity by using MD5 (message digest algorithm 5th) value. Here is the instruction to get the MD5 value:
1:Click the Finder icon in your dock.Click Go in the menu bar which is at the top of the screen.
Click Utilities,scroll down and double-click Terminal in the Utilities window to open a Terminal window in your MAC system.
2:Please enter the following in the opened Terminal window:
openssl md5 /full/path/to/file
If the installer package is called FoxitReader310.enu.setup.pkg and it's in the Downloads folder, it would look like this:
openssl md5 ~/Downloads/FoxitReader310.enu.setup.pkg
3:The result should look like this:
The series of letters and numbers in the result is the MD5 value.
Please compare this MD5 value to the one provided by Foxit to verify that if the setup file is integral or not. If you need to obtain the MD5 values for Foxit PDF Reader for Mac and Foxit PDF Editor for Mac installer packages, please contact our support by submitting a ticket from here.
Note:MD5 values are not case sensitive.